HOLT prefixes in area code 517
NANPA records 13 assigned NXX blocks to rate center HOLT in area code 517, 2.1% of the 616 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 9 holders hold those blocks, the largest being MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (3), NEW CINGULAR WIRELESS PCS, LLC - IL (2), MICHIGAN BELL TEL CO (2). The earliest assignment on record here is 2002-01-21 and the most recent 2019-11-25. 12 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 218, 816 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 517-209 | Bandwidth BANDWIDTH.COM CLEC, LLC - MI | 2009-05-04 | yes | yes |
| 517-221 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2016-04-12 | yes | yes |
| 517-268 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 517-477 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2004-12-20 | yes | yes |
| 517-694 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 517-699 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 517-709 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 2006-03-02 | yes | yes |
| 517-742 | AT&T AT&T ENTERPRISES, LLC | 2008-09-02 | yes | yes |
| 517-758 | FRACTEL, LLC | 2019-11-25 | yes | yes |
| 517-777 | Onvoy ONVOY, LLCV - MI | 2015-08-18 | yes | yes |
| 517-876 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 2005-07-13 | yes | yes |
| 517-889 | Windstream PAETEC ITEL, LLC | 2006-01-12 | yes | yes |
| 517-906 | ACD TELECOM, INC. - MI | 2002-01-21 | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Verizon | 3 | 23.1% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 2 | 15.4% |
| MICHIGAN BELL TEL CO | AT&T | 2 | 15.4% |
| BANDWIDTH.COM CLEC, LLC - MI | Bandwidth | 1 | 7.7% |
| AT&T ENTERPRISES, LLC | AT&T | 1 | 7.7% |
| FRACTEL, LLC | – | 1 | 7.7% |
| ONVOY, LLCV - MI | Onvoy | 1 | 7.7% |
| PAETEC ITEL, LLC | Windstream | 1 | 7.7% |
| ACD TELECOM, INC. - MI | – | 1 | 7.7% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to HOLT in area code 517?
13 blocks: 209, 221, 268, 477, 694, 699, 709, 742, 758, 777, 876, 889 and 1 more, all listed in the table above.
Which carriers have numbers in HOLT?
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (3 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), MICHIGAN BELL TEL CO (2 blocks), BANDWIDTH.COM CLEC, LLC - MI (1 block), AT&T ENTERPRISES, LLC (1 block), FRACTEL, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is HOLT a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.