RIALTO prefixes in area code 909
NANPA records 34 assigned NXX blocks to rate center RIALTO in area code 909, 4.3% of the 786 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. 13 holders hold those blocks, the largest being PACIFIC BELL (8), METROPCS NETWORKS, LLC (5), BANDWIDTH.COM CLEC, LLC - CA (4). The earliest assignment on record here is 2005-12-16 and the most recent 2018-03-15. 28 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 code 840 – 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 |
|---|---|---|---|---|
| 909-233 | T-Mobile METROPCS NETWORKS, LLC | 2007-03-20 | yes | yes |
| 909-237 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 909-258 | T-Mobile METROPCS NETWORKS, LLC | 2008-07-21 | yes | yes |
| 909-265 | T-Mobile METROPCS NETWORKS, LLC | 2009-01-31 | yes | yes |
| 909-271 | Onvoy ONVOY, LLC - CA | 2009-02-11 | yes | yes |
| 909-301 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2011-08-05 | yes | yes |
| 909-341 | Charter TWC IP ENABLED SERVICES, LLC | 2012-03-16 | yes | yes |
| 909-419 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 909-421 | AT&T PACIFIC BELL | – | no | yes |
| 909-440 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 909-442 | T-Mobile T-MOBILE USA, INC. | 2016-11-02 | yes | yes |
| 909-543 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 909-546 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 909-562 | AT&T PACIFIC BELL | – | yes | yes |
| 909-566 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2015-04-24 | yes | yes |
| 909-586 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 909-640 | AT&T AT&T ENTERPRISES, LLC | 2016-08-05 | yes | yes |
| 909-644 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 909-666 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 909-676 | T-Mobile METROPCS NETWORKS, LLC | 2014-12-24 | yes | yes |
| 909-685 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2006-07-10 | yes | yes |
| 909-745 | T-Mobile T-MOBILE USA, INC. | 2015-09-16 | yes | yes |
| 909-746 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 909-787 | Onvoy ONVOY, LLC - CA | 2016-02-16 | yes | yes |
| 909-820 | AT&T PACIFIC BELL | – | no | yes |
| 909-873 | AT&T PACIFIC BELL | – | no | yes |
| 909-874 | AT&T PACIFIC BELL | – | no | yes |
| 909-875 | AT&T PACIFIC BELL | – | no | yes |
| 909-877 | AT&T PACIFIC BELL | – | no | yes |
| 909-879 | AT&T PACIFIC BELL | – | yes | yes |
| 909-955 | T-Mobile METROPCS NETWORKS, LLC | 2018-03-15 | yes | yes |
| 909-961 | T-Mobile T-MOBILE USA, INC. | 2005-12-16 | yes | yes |
| 909-990 | Charter TWC IP ENABLED SERVICES, LLC | 2013-03-18 | yes | yes |
| 909-999 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | 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 |
|---|---|---|---|
| PACIFIC BELL | AT&T | 8 | 23.5% |
| METROPCS NETWORKS, LLC | T-Mobile | 5 | 14.7% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 4 | 11.8% |
| T-MOBILE USA, INC. | T-Mobile | 3 | 8.8% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 3 | 8.8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 2 | 5.9% |
| ONVOY, LLC - CA | Onvoy | 2 | 5.9% |
| TWC IP ENABLED SERVICES, LLC | Charter | 2 | 5.9% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 2.9% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 1 | 2.9% |
| AT&T ENTERPRISES, LLC | AT&T | 1 | 2.9% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 2.9% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 2.9% |
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 RIALTO in area code 909?
34 blocks: 233, 237, 258, 265, 271, 301, 341, 419, 421, 440, 442, 543 and 22 more, all listed in the table above.
Which carriers have numbers in RIALTO?
PACIFIC BELL (8 blocks), METROPCS NETWORKS, LLC (5 blocks), BANDWIDTH.COM CLEC, LLC - CA (4 blocks), T-MOBILE USA, INC. (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is RIALTO 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.