Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 563 prefixes
388 of the 786 possible NXX blocks are assigned in area code 563 (49.4% of capacity), spread across 109 rate centers and 74 holders. The largest holders are QWEST CORPORATION (54 blocks, 13.9%), UNITED STATES CELLULAR - IA (33 blocks, 8.5%), WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH (26 blocks, 6.7%). Grouped by brand, Lumen accounts for 71 blocks; brand-attributable holders cover 61% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-01-04 to 2026-06-03, with 20 blocks handed out in 2021 alone. 277 blocks (71%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 58 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
388 assigned blocks of 786
109 rate centers
74 holders of record
71% in thousands-block pooling
Largest holders in 563
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| QWEST CORPORATION | Lumen | 54 | 13.9% |
| UNITED STATES CELLULAR - IA | – | 33 | 8.5% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH | Windstream | 26 | 6.7% |
| T-MOBILE USA, INC. | T-Mobile | 25 | 6.4% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | Windstream | 22 | 5.7% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | Verizon | 18 | 4.6% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 18 | 4.6% |
| ONVOY, LLC - IA | Onvoy | 15 | 3.9% |
| LEVEL 3 COMMUNICATIONS, LLC - IA | Lumen | 12 | 3.1% |
| MCC TELEPHONY OF IOWA, LLC - IA | – | 12 | 3.1% |
| TON80 COMMUNICATIONS, LLC | – | 12 | 3.1% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. | Windstream | 11 | 2.8% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
All 388 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 563-200 | Charter | DAVENPORT | 2017-08-14 | yes | yes |
| 563-201 | Verizon | DYERSVILLE | 2022-11-28 | yes | yes |
| 563-202 | Verizon | DECORAH | 2013-12-24 | yes | yes |
| 563-203 | Verizon | CRESCO | 2004-05-06 | yes | yes |
| 563-204 | Telnyx | LANSING | – | yes | yes |
| 563-205 | Comcast | DAVENPORT | 2023-03-07 | yes | yes |
| 563-206 | Lumen | CLINTON | – | yes | yes |
| 563-207 | AT&T | DUBUQUE | 2016-09-20 | yes | yes |
| 563-208 | Onvoy | MUSCATINE | – | yes | yes |
| 563-209 | Verizon | DAVENPORT | 2004-07-14 | yes | yes |
| 563-210 | UNITED STATES CELLULAR - IA | DAVENPORT | – | yes | yes |
| 563-212 | UNITED STATES CELLULAR - IA | CLINTON | – | yes | yes |
| 563-213 | T-Mobile | DUBUQUE | – | yes | yes |
| 563-214 | Lumen | DAVENPORT | 2016-06-03 | yes | yes |
| 563-215 | AT&T | CLINTON | 2024-02-09 | yes | yes |
| 563-216 | Verizon | DUBUQUE | 2023-08-03 | yes | yes |
| 563-217 | Lumen | WAUKON | 2009-10-26 | yes | yes |
| 563-218 | Lumen | WILTON | 2024-03-05 | yes | yes |
| 563-219 | Bandwidth | CLINTON | – | yes | yes |
| 563-220 | MCC TELEPHONY OF IOWA, LLC - IA | SABULA | 2006-07-27 | yes | yes |
| 563-221 | UNITED STATES CELLULAR - IA | DE WITT | 2001-12-08 | yes | yes |
| 563-222 | Verizon | MUSCATINE | 2024-06-26 | yes | yes |
| 563-223 | MCC TELEPHONY OF IOWA, LLC - IA | ELDRIDGE | 2007-03-16 | yes | yes |
| 563-224 | Windstream | MAYNARD | 2015-10-20 | yes | yes |
| 563-225 | CENTRAL SCOTT TEL. | MCCAUSLAND | – | – | yes |
| 563-226 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-227 | MCC TELEPHONY OF IOWA, LLC - IA | DUBUQUE | 2018-06-14 | yes | yes |
| 563-228 | Windstream | BELLEVUE | 2015-06-24 | yes | yes |
| 563-229 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-230 | Windstream | DYERSVILLE | 2016-08-26 | yes | yes |
| 563-231 | UNITED STATES CELLULAR - IA | DUBUQUE | 2012-09-28 | yes | yes |
| 563-232 | AT&T | DAVENPORT | 2016-02-18 | yes | yes |
| 563-233 | MCC TELEPHONY LLC | SUMNER | 2006-07-28 | yes | yes |
| 563-234 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-235 | Verizon | DUBUQUE | 2015-10-15 | yes | yes |
| 563-236 | Lumen | ANDREW | 2018-06-28 | yes | yes |
| 563-237 | Windstream | FREDECKSBG | – | yes | yes |
| 563-238 | Windstream | LAWLER | – | yes | yes |
| 563-239 | MCC TELEPHONY OF IOWA, LLC - IA | DUBUQUE | 2016-09-23 | yes | yes |
| 563-240 | Lumen | LAMOTTE | 2018-06-28 | yes | yes |
| 563-241 | Lumen | CLINTON | – | yes | yes |
| 563-242 | Lumen | CLINTON | – | – | yes |
| 563-243 | Lumen | CLINTON | – | – | yes |
| 563-244 | Lumen | CLINTON | – | – | yes |
| 563-245 | ALPINE COMMUNICATIONS, L.C. | ELKADER | – | yes | yes |
| 563-246 | F&B COMMUNICATIONS, INC. | CALAMUS | – | – | yes |
| 563-247 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-248 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-249 | Verizon | CLINTON | – | – | yes |
| 563-250 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-251 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-252 | ALPINE COMMUNICATIONS, L.C. | GUTTENBERG | – | yes | yes |
| 563-253 | Windstream | TIPTON | 2016-11-14 | yes | yes |
| 563-254 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-255 | ALPINE COMMUNICATIONS, L.C. | GARBER | – | – | yes |
| 563-256 | UNITED STATES CELLULAR - IA | DE WITT | 2025-03-21 | yes | yes |
| 563-257 | WAVENATION, LLC | DAVENPORT | 2025-07-29 | yes | yes |
| 563-258 | AT&T | DUBUQUE | 2011-11-23 | yes | yes |
| 563-259 | Lumen | CLINTON | – | yes | yes |
| 563-260 | UNITED STATES CELLULAR - IA | MUSCATINE | – | yes | yes |
| 563-261 | IMON COMMUNICATIONS, LLC - IA | MUSCATINE | 2017-08-16 | yes | yes |
| 563-262 | Lumen | MUSCATINE | – | – | yes |
| 563-263 | Lumen | MUSCATINE | – | – | yes |
| 563-264 | Lumen | MUSCATINE | – | – | yes |
| 563-265 | Lumen | DAVENPORT | 2009-11-24 | yes | yes |
| 563-266 | Lumen | BERNARD | 2018-06-28 | yes | yes |
| 563-268 | Lumen | BALDWIN | 2018-06-28 | yes | yes |
| 563-269 | Lumen | CASCADE | 2018-06-28 | yes | yes |
| 563-270 | Lumen | CENTER JCT | 2018-06-28 | yes | yes |
| 563-271 | Verizon | DAVENPORT | – | – | yes |
| 563-272 | Lumen | MUSCATINE | 2004-04-29 | yes | yes |
| 563-273 | Lumen | ONSLOW | 2018-06-28 | yes | yes |
| 563-274 | Lumen | OTTERCREEK | 2018-06-28 | yes | yes |
| 563-275 | Windstream | DAVENPORT | 2010-01-14 | yes | yes |
| 563-276 | Onvoy | WAUKON | 2019-08-27 | yes | yes |
| 563-277 | MCC TELEPHONY LLC | DECORAH | 2010-03-19 | yes | yes |
| 563-278 | Onvoy | CLINTON | 2019-08-27 | yes | yes |
| 563-279 | AIRUS, INC - IA | DAVENPORT | 2019-10-30 | yes | yes |
| 563-280 | AT&T | DAVENPORT | 2026-04-28 | yes | yes |
| 563-281 | Onvoy | MUSCATINE | 2019-08-29 | yes | yes |
| 563-282 | CENTRAL SCOTT TEL. | DONAHUE | – | – | yes |
| 563-283 | HD CARRIER LLC | MUSCATINE | 2019-11-26 | yes | yes |
| 563-284 | Lumen | WALCOTT | – | yes | yes |
| 563-285 | CENTRAL SCOTT TEL. | ELDRIDGE | – | – | yes |
| 563-286 | Telnyx | DAVENPORT | 2019-11-21 | yes | yes |
| 563-287 | AIRUS, INC - IA | DECORAH | 2019-11-26 | yes | yes |
| 563-288 | Lumen | MUSCATINE | – | yes | yes |
| 563-289 | Windstream | LE CLAIRE | – | yes | yes |
| 563-290 | HAWKEYE INTERCONNECT COMPANY - IA | WAUCOMA | 2020-08-05 | yes | yes |
| 563-291 | Onvoy | DUBUQUE | 2021-01-11 | yes | yes |
| 563-292 | AIRUS, INC - IA | WEST UNION | 2018-02-07 | yes | yes |
| 563-293 | Onvoy | DAVENPORT | 2014-03-07 | yes | yes |
| 563-294 | AIRUS, INC - IA | WEST UNION | 2021-03-11 | yes | yes |
| 563-296 | CSC WIRELESS, LLC | DAVENPORT | 2020-07-23 | yes | yes |
| 563-297 | Onvoy | ARLINGTON | – | yes | yes |
| 563-298 | AT&T | GUTTENBERG | 2019-12-06 | yes | yes |
| 563-299 | Verizon | MUSCATINE | – | – | yes |
| 563-300 | EXIANT COMMUNICATIONS LLC | DAVENPORT | 2026-06-03 | yes | yes |
| 563-303 | Windstream | FAYETTE | 2015-10-20 | yes | yes |
| 563-306 | IP HORIZON LLC | DAVENPORT | 2021-04-01 | yes | yes |
| 563-307 | T-Mobile | DUBUQUE | 2022-01-04 | yes | yes |
| 563-308 | MCC TELEPHONY OF IOWA, LLC - IA | PRESTON | 2010-03-08 | yes | yes |
| 563-310 | AT&T | HAWKEYE | 2021-07-19 | – | yes |
| 563-312 | AT&T | LOSTNATION | 2021-07-19 | – | yes |
| 563-313 | Windstream | CRESCO | 2012-01-18 | yes | yes |
| 563-314 | AT&T | DORCHESTER | 2021-07-20 | – | yes |
| 563-315 | Windstream | STRAWBRYPT | 2015-06-25 | yes | yes |
| 563-316 | CS TECHNOLOGIES, INC. - IA | MUSCATINE | 2013-03-13 | yes | yes |
| 563-317 | AT&T | SOSPGGROVE | 2021-07-20 | – | yes |
| 563-318 | T-Mobile | TIPTON | 2022-08-25 | yes | yes |
| 563-320 | UNITED STATES CELLULAR - IA | DAVENPORT | – | yes | yes |
| 563-321 | Verizon | CLINTON | 2002-10-07 | yes | yes |
| 563-322 | Lumen | DAVENPORT | – | – | yes |
| 563-323 | Lumen | DAVENPORT | – | – | yes |
| 563-324 | Lumen | DAVENPORT | – | – | yes |
| 563-326 | Lumen | DAVENPORT | – | – | yes |
| 563-327 | Lumen | DAVENPORT | – | – | yes |
| 563-328 | Lumen | DAVENPORT | – | – | yes |
| 563-329 | UNITED STATES CELLULAR - IA | MCGREGOR | 2009-01-07 | yes | yes |
| 563-330 | AT&T | MONONA | 2021-07-22 | yes | yes |
| 563-331 | UNITED STATES CELLULAR - IA | TIPTON | 2015-09-28 | yes | yes |
| 563-332 | Lumen | DAVENPORT | – | – | yes |
| 563-333 | Lumen | DAVENPORT | – | – | yes |
| 563-334 | AIRUS, INC - IA | DECORAH | 2018-02-07 | yes | yes |
| 563-336 | Lumen | DAVENPORT | – | – | yes |
| 563-337 | HAWKEYE INTERCONNECT COMPANY - IA | FAYETTE | 2019-06-18 | yes | yes |
| 563-338 | AT&T | HOPKINTON | 2021-12-03 | yes | yes |
| 563-339 | Windstream | SUMNER | 2015-10-30 | yes | yes |
| 563-340 | Verizon | DAVENPORT | – | – | yes |
| 563-341 | UNITED STATES CELLULAR - IA | DUBUQUE | 2022-09-02 | yes | yes |
| 563-342 | TON80 COMMUNICATIONS, LLC | RYAN | 2022-02-11 | yes | yes |
| 563-343 | Verizon | DAVENPORT | – | – | yes |
| 563-344 | Lumen | DAVENPORT | – | – | yes |
| 563-345 | CS TECHNOLOGIES, INC. - IA | DAVENPORT | 2002-11-27 | – | yes |
| 563-346 | Dish | DAVENPORT | 2021-12-29 | yes | yes |
| 563-348 | FRACTEL, LLC | DUBUQUE | 2020-07-21 | yes | yes |
| 563-349 | UNITED STATES CELLULAR - IA | DAVENPORT | – | yes | yes |
| 563-351 | Lumen | DURANT | 2022-01-26 | yes | yes |
| 563-352 | AT&T | CLARENCE | 2022-02-22 | – | yes |
| 563-353 | AT&T | SO HARMONY | 2022-02-22 | – | yes |
| 563-355 | Lumen | DAVENPORT | – | – | yes |
| 563-356 | FRACTEL, LLC | CHESTER | 2019-12-19 | yes | yes |
| 563-357 | UNITED STATES CELLULAR - IA | CLINTON | – | yes | yes |
| 563-358 | MCC TELEPHONY LLC | FTATKINSON | 2007-02-14 | yes | yes |
| 563-359 | Lumen | DAVENPORT | – | – | yes |
| 563-362 | NUSO, LLC | DAVENPORT | 2012-11-05 | yes | yes |
| 563-363 | Windstream | MANCHESTER | 2015-06-25 | yes | yes |
| 563-366 | T-Mobile | CRESCO | 2022-04-28 | yes | yes |
| 563-370 | UNITED STATES CELLULAR - IA | DAVENPORT | – | yes | yes |
| 563-374 | F&B COMMUNICATIONS, INC. | WHEATLAND | – | – | yes |
| 563-379 | UNITED STATES CELLULAR - IA | DECORAH | – | yes | yes |
| 563-380 | UNITED STATES CELLULAR - IA | DECORAH | – | yes | yes |
| 563-381 | Lumen | DAVENPORT | – | yes | yes |
| 563-382 | Lumen | DECORAH | – | – | yes |
| 563-383 | Lumen | DAVENPORT | – | – | yes |
| 563-386 | Lumen | DAVENPORT | – | – | yes |
| 563-387 | Lumen | DECORAH | – | yes | yes |
| 563-388 | Lumen | DAVENPORT | – | – | yes |
| 563-391 | Lumen | DAVENPORT | – | – | yes |
| 563-396 | T-Mobile | DAVENPORT | 2018-02-12 | yes | yes |
| 563-400 | FRACTEL, LLC | CRESCO | 2019-12-17 | yes | yes |
| 563-412 | MCC TELEPHONY LLC | WEST UNION | 2010-03-19 | yes | yes |
| 563-419 | Verizon | DECORAH | – | – | yes |
| 563-421 | Lumen | DAVENPORT | – | yes | yes |
| 563-422 | Lumen | WEST UNION | – | yes | yes |
| 563-423 | ACE TEL. ASSN. - IA | CLERMONT | – | – | yes |
| 563-424 | MCC TELEPHONY OF IOWA, LLC - IA | DAVENPORT | 2010-02-16 | yes | yes |
| 563-425 | Windstream | FAYETTE | – | yes | yes |
| 563-426 | ALPINE COMMUNICATIONS, L.C. | ELGIN | – | – | yes |
| 563-427 | HAWKEYE TEL. CO. | HAWKEYE | – | – | yes |
| 563-428 | Windstream | RANDALIA | – | yes | yes |
| 563-429 | Windstream | ALPHA | – | yes | yes |
| 563-432 | MECHANICSVILLE TEL. CO. | MECHANCSVL | – | – | yes |
| 563-441 | Lumen | DAVENPORT | – | – | yes |
| 563-444 | Onvoy | ATALISSA | 2025-08-21 | yes | yes |
| 563-445 | Lumen | DAVENPORT | – | – | yes |
| 563-446 | TON80 COMMUNICATIONS, LLC | DELHI | 2022-02-10 | yes | yes |
| 563-447 | Bandwidth | WALCOTT | 2006-12-30 | yes | yes |
| 563-449 | Lumen | DAVENPORT | – | yes | yes |
| 563-451 | AT&T | DUBUQUE | – | yes | yes |
| 563-452 | CLARENCE TEL. CO. INC. | CLARENCE | – | – | yes |
| 563-453 | TON80 COMMUNICATIONS, LLC | ELKADER | 2022-01-13 | yes | yes |
| 563-454 | MCC TELEPHONY LLC | WYOMING | 2007-03-17 | yes | yes |
| 563-456 | Dish | DAVENPORT | 2025-07-29 | yes | yes |
| 563-459 | Lumen | DAVENPORT | – | yes | yes |
| 563-465 | FRACTEL, LLC | FARLEY | 2020-07-21 | yes | yes |
| 563-466 | TON80 COMMUNICATIONS, LLC | VOLGA | 2022-02-11 | yes | yes |
| 563-468 | Lumen | DAVENPORT | – | yes | yes |
| 563-477 | Charter | CLINTON | 2021-06-21 | yes | yes |
| 563-478 | TON80 COMMUNICATIONS, LLC | NEW VIENNA | 2022-02-21 | yes | yes |
| 563-482 | Windstream | LAWLER | 2015-10-20 | yes | yes |
| 563-484 | Bandwidth | DAVENPORT | 2008-05-28 | yes | yes |
| 563-485 | ONSLOW COOP. TEL. ASSN. | ONSLOW | – | – | yes |
| 563-486 | MCC TELEPHONY OF IOWA, LLC - IA | OXFORD JCT | – | yes | yes |
| 563-487 | CENTER JUNCTION TEL. CO. | CENTER JCT | – | – | yes |
| 563-488 | WYOMING MUTUAL TEL. CO. | WYOMING | – | – | yes |
| 563-492 | SPRING GROVE COMMUNICATIONS | SOSPGGROVE | – | – | yes |
| 563-495 | T-Mobile | DUBUQUE | – | – | yes |
| 563-496 | MABEL TEL. COOP. CO. - MN | HESPER | – | – | yes |
| 563-497 | ACE TEL. ASSN. - MN | DORCHESTER | – | – | yes |
| 563-499 | AT&T | DAVENPORT | – | yes | yes |
| 563-500 | FRACTEL, LLC | DUBUQUE | 2019-12-23 | yes | yes |
| 563-503 | T-Mobile | CLINTON | – | yes | yes |
| 563-505 | T-Mobile | DAVENPORT | – | yes | yes |
| 563-506 | T-Mobile | MUSCATINE | – | yes | yes |
| 563-508 | AT&T | DAVENPORT | – | – | yes |
| 563-509 | AT&T | LIME SPG | 2021-12-03 | yes | yes |
| 563-513 | UNITED STATES CELLULAR - IA | DUBUQUE | 2001-03-04 | yes | yes |
| 563-514 | NUSO, LLC | DAVENPORT | – | yes | yes |
| 563-516 | T-Mobile | ELKADER | – | yes | yes |
| 563-517 | T-Mobile | DECORAH | – | yes | yes |
| 563-518 | T-Mobile | WEST UNION | – | yes | yes |
| 563-519 | Windstream | CLINTON | 2001-01-04 | yes | yes |
| 563-521 | Lumen | MAQUOKETA | 2016-09-21 | yes | yes |
| 563-522 | Windstream | LOW MOOR | – | yes | yes |
| 563-526 | Vonage | DAVENPORT | 2018-06-05 | yes | yes |
| 563-528 | T-Mobile | DAVENPORT | 2001-10-30 | yes | yes |
| 563-529 | T-Mobile | DAVENPORT | – | yes | yes |
| 563-532 | ACE TEL. ASSN. - IA | OSSIAN | – | – | yes |
| 563-534 | ACE TEL. ASSN. - IA | FTATKINSON | – | – | yes |
| 563-535 | ACE TEL. ASSN. - IA | WATERVILLE | – | – | yes |
| 563-536 | NORTHEAST IOWA TEL. CO. | FARMERSBG | – | – | yes |
| 563-537 | T-Mobile | MONONA | 2006-11-16 | – | yes |
| 563-538 | Lumen | LANSING | – | yes | yes |
| 563-539 | NORTHEAST IOWA TEL. CO. | MONONA | – | – | yes |
| 563-540 | Charter | WAUKON | 2021-06-21 | yes | yes |
| 563-542 | UNITED STATES CELLULAR - IA | DUBUQUE | 2001-04-03 | yes | yes |
| 563-543 | UNITED STATES CELLULAR - IA | DUBUQUE | – | yes | yes |
| 563-544 | ACE TEL. ASSN. - IA | NEW ALBIN | – | – | yes |
| 563-546 | ACE TEL. ASSN. - IA | HIGHLANDVL | – | – | yes |
| 563-547 | Windstream | CRESCO | – | yes | yes |
| 563-549 | AT&T | DAVENPORT | 2009-12-08 | yes | yes |
| 563-550 | Charter | CALMAR | 2021-06-21 | yes | yes |
| 563-551 | WIDE VOICE, LLC - IA | DAVENPORT | 2019-11-20 | yes | yes |
| 563-552 | Lumen | DUBUQUE | – | yes | yes |
| 563-554 | T-Mobile | MUSCATINE | – | yes | yes |
| 563-556 | Lumen | DUBUQUE | – | – | yes |
| 563-557 | Lumen | DUBUQUE | – | – | yes |
| 563-559 | T-Mobile | CLINTON | – | yes | yes |
| 563-560 | Charter | LANSING | 2021-06-21 | yes | yes |
| 563-562 | Lumen | CALMAR | – | yes | yes |
| 563-564 | T-Mobile | DUBUQUE | – | yes | yes |
| 563-565 | Lumen | CHESTER | – | yes | yes |
| 563-566 | Windstream | LIME SPG | – | yes | yes |
| 563-567 | ACE TEL. ASSN. - IA | CASTALIA | – | – | yes |
| 563-568 | Lumen | WAUKON | – | yes | yes |
| 563-569 | Windstream | PROTIVIN | – | yes | yes |
| 563-570 | T-Mobile | DAVENPORT | – | – | yes |
| 563-571 | T-Mobile | MUSCATINE | – | – | yes |
| 563-574 | F&B COMMUNICATIONS, INC. - IA | DELMAR | – | – | yes |
| 563-577 | PRESTON TEL. CO. | GOOSE LAKE | – | – | yes |
| 563-578 | Windstream | SUMNER | – | yes | yes |
| 563-579 | T-Mobile | DAVENPORT | – | – | yes |
| 563-580 | Verizon | DUBUQUE | – | – | yes |
| 563-581 | Verizon | DUBUQUE | – | – | yes |
| 563-582 | Lumen | DUBUQUE | – | – | yes |
| 563-583 | Lumen | DUBUQUE | – | – | yes |
| 563-584 | Lumen | DUBUQUE | – | – | yes |
| 563-585 | Lumen | DUBUQUE | – | – | yes |
| 563-586 | ACE TEL. ASSN. - IA | HARPESFRRY | – | yes | yes |
| 563-587 | Lumen | DUBUQUE | – | yes | yes |
| 563-588 | Lumen | DUBUQUE | – | – | yes |
| 563-589 | Lumen | DUBUQUE | – | – | yes |
| 563-590 | UNITED STATES CELLULAR - IA | DUBUQUE | – | yes | yes |
| 563-593 | T-Mobile | CLINTON | – | – | yes |
| 563-594 | Onvoy | DAVENPORT | 2011-02-14 | yes | yes |
| 563-599 | UNITED STATES CELLULAR - IA | DUBUQUE | – | yes | yes |
| 563-600 | FRACTEL, LLC | LANSING | 2019-12-17 | yes | yes |
| 563-605 | Verizon | POSTVILLE | – | yes | yes |
| 563-607 | AT&T | MUSCATINE | 2001-06-05 | yes | yes |
| 563-608 | UNITED STATES CELLULAR - IA | MANCHESTER | 2001-01-24 | yes | yes |
| 563-613 | AT&T | LOW MOOR | 2001-06-18 | yes | yes |
| 563-624 | TON80 COMMUNICATIONS, LLC | EPWORTH | 2022-02-21 | yes | yes |
| 563-626 | TON80 COMMUNICATIONS, LLC | HARPESFRRY | 2021-09-17 | yes | yes |
| 563-633 | Windstream | ARLINGTON | – | yes | yes |
| 563-635 | Windstream | LE CLAIRE | 2015-06-25 | yes | yes |
| 563-637 | Windstream | MAYNARD | – | yes | yes |
| 563-639 | AT&T | DAVENPORT | 2008-09-08 | yes | yes |
| 563-644 | TON80 COMMUNICATIONS, LLC | DECORAH | 2021-06-03 | yes | yes |
| 563-649 | Windstream | ATALISSA | – | yes | yes |
| 563-650 | T-Mobile | DAVENPORT | – | yes | yes |
| 563-651 | MCC TELEPHONY OF IOWA, LLC - IA | OXFORD JCT | 2007-02-04 | yes | yes |
| 563-652 | Lumen | MAQUOKETA | – | yes | yes |
| 563-655 | Windstream | DE WITT | 2015-06-25 | yes | yes |
| 563-657 | Onvoy | WALCOTT | 2005-05-03 | yes | yes |
| 563-659 | Windstream | DE WITT | – | yes | yes |
| 563-661 | Onvoy | MAQUOKETA | – | yes | yes |
| 563-663 | AT&T | DUBUQUE | 2001-06-05 | yes | yes |
| 563-666 | Onvoy | WALCOTT | 2017-09-29 | yes | yes |
| 563-672 | ANDREW TEL. CO., INC. | ANDREW | – | – | yes |
| 563-673 | BALDWIN NASHVILLE TEL. CO., INC. | BALDWIN | – | – | yes |
| 563-674 | Windstream | DELMAR | – | yes | yes |
| 563-676 | T-Mobile | DAVENPORT | 2002-01-10 | yes | yes |
| 563-677 | Windstream | CHARLOTTE | – | yes | yes |
| 563-678 | LOST NATION-ELWOOD TEL. CO. | LOSTNATION | – | – | yes |
| 563-682 | MILES COOP. TEL. ASSN. | MILES | – | – | yes |
| 563-683 | MCC TELEPHONY LLC | NEW ALBIN | 2007-02-14 | yes | yes |
| 563-686 | CASCADE COMMUNICATIONS COMPANY | OTTERCREEK | – | – | yes |
| 563-687 | Windstream | SABULA | – | yes | yes |
| 563-689 | PRESTON TEL. CO. | PRESTON | – | – | yes |
| 563-690 | Windstream | DUBUQUE | – | yes | yes |
| 563-694 | MCC TELEPHONY OF IOWA, LLC - IA | GOOSE LAKE | 2007-03-16 | yes | yes |
| 563-723 | Onvoy | DAVENPORT | 2008-07-24 | yes | yes |
| 563-724 | Windstream | MOSCOW | – | yes | yes |
| 563-725 | MCC TELEPHONY LLC | ELGIN | 2007-02-14 | yes | yes |
| 563-726 | Onvoy | DAVENPORT | 2007-12-18 | yes | yes |
| 563-729 | MCC TELEPHONY OF IOWA, LLC - IA | LE CLAIRE | 2010-03-09 | yes | yes |
| 563-732 | WILTON TEL. CO. | WILTON | – | – | yes |
| 563-735 | MABEL COOP. TEL. CO. - IA | BURR OAK | – | – | yes |
| 563-737 | MABEL COOP. TEL. CO. - IA | RIDGEWAY | – | – | yes |
| 563-742 | Lumen | DAVENPORT | – | yes | yes |
| 563-744 | Windstream | FARLEY | – | yes | yes |
| 563-745 | ACE TEL. ASSN. - MN | SO CANTON | – | – | yes |
| 563-746 | TON80 COMMUNICATIONS, LLC | GREELEY | 2022-02-10 | yes | yes |
| 563-748 | Bandwidth | MAQUOKETA | 2007-12-07 | yes | yes |
| 563-758 | FRACTEL, LLC | WORTHINGTN | 2020-07-21 | yes | yes |
| 563-764 | MCC TELEPHONY LLC | OSSIAN | 2007-02-14 | yes | yes |
| 563-766 | FRACTEL, LLC | COLESBURG | 2019-12-23 | yes | yes |
| 563-767 | Windstream | VOLGA | – | yes | yes |
| 563-770 | Verizon | MUSCATINE | – | yes | yes |
| 563-772 | T-Mobile | CASCADE | 2025-03-31 | yes | yes |
| 563-773 | LA MOTTE TEL. CO. | LAMOTTE | – | – | yes |
| 563-774 | Windstream | WADENA | – | yes | yes |
| 563-776 | Windstream | WAUCOMA | – | yes | yes |
| 563-777 | Verizon | SABULA | – | yes | yes |
| 563-778 | Windstream | ST LUCAS | – | yes | yes |
| 563-783 | NORTHEAST IOWA TEL. CO. | ST OLAF | – | – | yes |
| 563-785 | Windstream | DURANT | – | yes | yes |
| 563-794 | UNITED STATES CELLULAR - IA | WAUKON | 2007-09-19 | yes | yes |
| 563-800 | Onvoy | CALMAR | 2018-02-16 | yes | yes |
| 563-822 | MCC TELEPHONY LLC | MANCHESTER | 2010-02-16 | yes | yes |
| 563-823 | Windstream | DAVENPORT | – | – | yes |
| 563-826 | LOST NATION-ELWOOD TEL. CO. | OXFORD JCT | – | – | yes |
| 563-832 | TON80 COMMUNICATIONS, LLC | GARNAVILLO | 2022-01-13 | yes | yes |
| 563-837 | TON80 COMMUNICATIONS, LLC | FREDECKSBG | 2022-02-14 | yes | yes |
| 563-842 | FRACTEL, LLC | HOLY CROSS | 2021-05-10 | yes | yes |
| 563-843 | DIXON ACQUISITION, LLC | DIXON | – | – | yes |
| 563-844 | TERRA NOVA TELECOM INC. | DAVENPORT | 2021-04-29 | yes | yes |
| 563-845 | AT&T | DUBUQUE | 2009-04-13 | yes | yes |
| 563-847 | GRAND MOUND COOP. TEL. ASSN. | GRANDMOUND | – | – | yes |
| 563-849 | MCC TELEPHONY OF IOWA, LLC - IA | HESPER | 2007-03-16 | yes | yes |
| 563-852 | CASCADE COMMUNICATIONS COMPANY | CASCADE | – | – | yes |
| 563-853 | Windstream | LUXEMBURG | – | yes | yes |
| 563-855 | Windstream | WORTHINGTN | – | yes | yes |
| 563-856 | Windstream | COLESBURG | – | yes | yes |
| 563-863 | NEIT SERVICES LLC - IA | POSTVILLE | 2016-07-28 | – | yes |
| 563-864 | Lumen | POSTVILLE | – | – | yes |
| 563-867 | COMMIO, LLC | DAVENPORT | 2021-04-02 | yes | yes |
| 563-870 | Windstream | HOLY CROSS | – | yes | yes |
| 563-872 | Windstream | BELLEVUE | – | yes | yes |
| 563-873 | ALPINE COMMUNICATIONS, L.C. | MCGREGOR | – | – | yes |
| 563-875 | Windstream | DYERSVILLE | – | yes | yes |
| 563-876 | Windstream | EPWORTH | – | yes | yes |
| 563-877 | FRACTEL, LLC | EARLVILLE | 2020-07-21 | yes | yes |
| 563-879 | BERNARD TEL. CO., INC. | BERNARD | – | – | yes |
| 563-880 | UNITED STATES CELLULAR - IA | MCGREGOR | – | yes | yes |
| 563-883 | HARMONY TEL. CO. | SO HARMONY | – | – | yes |
| 563-884 | Lumen | DAVENPORT | – | – | yes |
| 563-886 | Windstream | TIPTON | – | yes | yes |
| 563-888 | Lumen | DAVENPORT | – | yes | yes |
| 563-889 | T-Mobile | TIPTON | – | – | yes |
| 563-890 | F&B COMMUNICATIONS, INC. - IA | BENNETT | – | – | yes |
| 563-893 | Windstream | BENNETT | – | yes | yes |
| 563-895 | Twilio | DAVENPORT | 2020-10-23 | yes | yes |
| 563-900 | FRACTEL, LLC | DAVENPORT | 2019-12-23 | yes | yes |
| 563-920 | UNITED STATES CELLULAR - IA | MANCHESTER | – | yes | yes |
| 563-921 | Windstream | NEW VIENNA | – | yes | yes |
| 563-922 | Windstream | DELHI | – | yes | yes |
| 563-923 | Windstream | EARLVILLE | – | yes | yes |
| 563-924 | Windstream | LAMONT | – | yes | yes |
| 563-925 | Windstream | GREELEY | – | yes | yes |
| 563-926 | Windstream | HOPKINTON | – | yes | yes |
| 563-927 | Windstream | MANCHESTER | – | yes | yes |
| 563-928 | Windstream | EDGEWOOD | – | yes | yes |
| 563-929 | Verizon | MANCHESTER | 2003-07-14 | yes | yes |
| 563-932 | Windstream | RYAN | – | yes | yes |
| 563-933 | Windstream | STRAWBRYPT | – | yes | yes |
| 563-934 | MCC TELEPHONY OF IOWA, LLC - IA | MILES | 2007-03-16 | yes | yes |
| 563-940 | Verizon | DAVENPORT | – | – | yes |
| 563-941 | F&B COMMUNICATIONS, INC. - IA | LOWDEN | – | – | yes |
| 563-942 | CEDAR COMMUNICATIONS, LLC | STANWOOD | – | – | yes |
| 563-944 | Windstream | LOWDEN | – | yes | yes |
| 563-945 | Windstream | STANWOOD | – | yes | yes |
| 563-946 | Windstream | ROCHESTER | – | yes | yes |
| 563-949 | UNITED STATES CELLULAR - IA | DAVENPORT | – | yes | yes |
| 563-964 | ALPINE COMMUNICATIONS, L.C. | GARNAVILLO | – | yes | yes |
| 563-972 | TON80 COMMUNICATIONS, LLC | WADENA | 2022-02-14 | yes | yes |
| 563-999 | LOUISA COMMUNICATIONS, LC - IA | MUSCATINE | – | – | yes |
Frequently asked
How many prefixes does area code 563 have?
388 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 3,880 thousand-number ranges across 109 rate centers.
What do the first three digits after 563 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 563 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 563 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 277 of 563's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
More about this code: overview · carriers · spam complaints · local time