NumberResearchRecent thousands-block assignments
76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 2026-04
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days
New assignments by month
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Oct 2025
| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2004-12-06 | 916-420-8XXX | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2004-12-06 | 916-429-5XXX | T-MOBILE USA, INC. | 6529 | SCRM MAIN | CA |
| 2004-12-03 | 219-510-4XXX | T-MOBILE USA, INC. | 6529 | VALPARAISO | IN |
| 2004-12-03 | 312-799-1XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN01 | IL |
| 2004-12-03 | 312-799-9XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN01 | IL |
| 2004-12-03 | 602-412-7XXX | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2004-12-03 | 602-412-8XXX | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2004-12-03 | 602-427-7XXX | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2004-12-03 | 602-427-8XXX | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2004-12-03 | 623-385-6XXX | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2004-12-03 | 623-385-9XXX | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2004-12-03 | 773-503-0XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN10 | IL |
| 2004-12-03 | 773-524-7XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2004-12-03 | 773-822-6XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2004-12-02 | 219-801-2XXX | T-MOBILE USA, INC. | 6529 | E CHICAGO | IN |
| 2004-12-02 | 219-916-8XXX | T-MOBILE USA, INC. | 6529 | VALPARAISO | IN |
| 2004-11-30 | 630-749-8XXX | T-MOBILE USA, INC. | 6529 | ELMHURST | IL |
| 2004-11-30 | 773-494-5XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN03 | IL |
| 2004-11-29 | 219-484-5XXX | T-MOBILE USA, INC. | 6529 | GARY | IN |
| 2004-11-29 | 224-766-1XXX | T-MOBILE USA, INC. | 6529 | GLENVIEW | IL |
| 2004-11-29 | 330-921-8XXX | T-MOBILE USA, INC. | 6529 | COLUMBIANA | OH |
| 2004-11-29 | 503-334-7XXX | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2004-11-29 | 503-334-8XXX | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2004-11-29 | 503-334-9XXX | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2004-11-29 | 503-737-4XXX | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2004-11-29 | 503-737-5XXX | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2004-11-29 | 503-737-7XXX | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2004-11-29 | 503-737-8XXX | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2004-11-29 | 541-610-7XXX | T-MOBILE USA, INC. | 6529 | BEND | OR |
| 2004-11-29 | 720-207-7XXX | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2004-11-29 | 720-207-8XXX | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2004-11-29 | 773-822-4XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2004-11-29 | 773-829-7XXX | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2004-11-29 | 815-261-7XXX | T-MOBILE USA, INC. | 6529 | CRYSTAL LK | IL |
| 2004-11-24 | 213-255-0XXX | T-MOBILE USA, INC. | 6529 | LSAN DA 07 | CA |
| 2004-11-24 | 224-220-6XXX | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2004-11-24 | 224-220-7XXX | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2004-11-24 | 304-952-5XXX | T-MOBILE USA, INC. | 6529 | BLUEFIELD | WV |
| 2004-11-24 | 310-456-4XXX | T-MOBILE USA, INC. | 6529 | MALIBU | CA |
| 2004-11-24 | 310-706-5XXX | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2004-11-24 | 310-706-7XXX | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2004-11-24 | 323-334-6XXX | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2004-11-24 | 323-603-8XXX | T-MOBILE USA, INC. | 6529 | LSAN DA 14 | CA |
| 2004-11-24 | 360-483-9XXX | T-MOBILE USA, INC. | 6529 | WHATCOMCTY | WA |
| 2004-11-24 | 408-603-6XXX | T-MOBILE USA, INC. | 6529 | CAMPBELL | CA |
| 2004-11-24 | 559-274-2XXX | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2004-11-24 | 559-274-3XXX | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2004-11-24 | 619-212-6XXX | T-MOBILE USA, INC. | 6529 | EL CAJON | CA |
| 2004-11-24 | 626-217-3XXX | T-MOBILE USA, INC. | 6529 | LA PUENTE | CA |
| 2004-11-24 | 626-251-0XXX | T-MOBILE USA, INC. | 6529 | COVINA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.