NumberResearchRecent thousands-block assignments
66 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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
Sep 2026
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Dec 2025
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Oct 2025
| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2022-03-22 | 331-627-1XXX | T-MOBILE USA, INC. | 6529 | LOMBARD | IL |
| 2022-03-22 | 575-283-2XXX | T-MOBILE USA, INC. | 6529 | ANTHONY | NM |
| 2022-03-22 | 575-966-9XXX | T-MOBILE USA, INC. | 6529 | LA MESA | NM |
| 2022-03-21 | 224-378-4XXX | T-MOBILE USA, INC. | 6529 | LIBERTYVL | IL |
| 2022-03-21 | 307-306-7XXX | T-MOBILE USA, INC. | 6529 | DOUGLAS | WY |
| 2022-03-21 | 307-381-8XXX | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2022-03-21 | 307-381-9XXX | T-MOBILE USA, INC. | 6529 | SHERIDAN | WY |
| 2022-03-21 | 307-556-9XXX | T-MOBILE USA, INC. | 6529 | RIVERTON | WY |
| 2022-03-21 | 307-881-5XXX | T-MOBILE USA, INC. | 6529 | WHEATLAND | WY |
| 2022-03-21 | 319-280-1XXX | T-MOBILE USA, INC. | 6529 | KEOSAUQUA | IA |
| 2022-03-21 | 319-280-5XXX | T-MOBILE USA, INC. | 6529 | KEOSAUQUA | IA |
| 2022-03-21 | 319-280-6XXX | T-MOBILE USA, INC. | 6529 | KEOSAUQUA | IA |
| 2022-03-21 | 424-481-9XXX | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2022-03-21 | 435-630-2XXX | T-MOBILE USA, INC. | 6529 | PRICE | UT |
| 2022-03-21 | 505-498-7XXX | T-MOBILE USA, INC. | 6529 | LAS VEGAS | NM |
| 2022-03-21 | 505-498-8XXX | T-MOBILE USA, INC. | 6529 | LAS VEGAS | NM |
| 2022-03-21 | 509-986-5XXX | T-MOBILE USA, INC. | 6529 | ELLENSBURG | WA |
| 2022-03-21 | 509-986-6XXX | T-MOBILE USA, INC. | 6529 | ELLENSBURG | WA |
| 2022-03-21 | 509-986-7XXX | T-MOBILE USA, INC. | 6529 | ELLENSBURG | WA |
| 2022-03-21 | 564-544-2XXX | T-MOBILE USA, INC. | 6529 | ABERDEEN | WA |
| 2022-03-21 | 564-544-4XXX | T-MOBILE USA, INC. | 6529 | ABERDEEN | WA |
| 2022-03-21 | 775-486-3XXX | T-MOBILE USA, INC. | 6529 | CARSONCITY | NV |
| 2022-03-21 | 775-486-5XXX | T-MOBILE USA, INC. | 6529 | CARSONCITY | NV |
| 2022-03-21 | 775-634-0XXX | T-MOBILE USA, INC. | 6529 | CARSONCITY | NV |
| 2022-03-21 | 808-302-3XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 808-302-4XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 808-302-5XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 808-302-6XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 808-302-7XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 808-302-8XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 808-302-9XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 808-404-7XXX | T-MOBILE USA, INC. | 6529 | HONOLULU | HI |
| 2022-03-21 | 928-385-8XXX | T-MOBILE USA, INC. | 6529 | KINGMAN | AZ |
| 2022-03-21 | 928-385-9XXX | T-MOBILE USA, INC. | 6529 | KINGMAN | AZ |
| 2022-03-21 | 970-730-1XXX | T-MOBILE USA, INC. | 6529 | GRAND JCT | CO |
| 2022-03-21 | 970-902-2XXX | T-MOBILE USA, INC. | 6529 | GRAND JCT | CO |
| 2022-03-18 | 310-706-9XXX | T-MOBILE USA, INC. | 6529 | HAWTHORNE | CA |
| 2022-03-18 | 442-368-6XXX | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2022-03-18 | 442-368-8XXX | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2022-03-18 | 442-386-0XXX | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2022-03-18 | 442-423-8XXX | T-MOBILE USA, INC. | 6529 | LKISABELLA | CA |
| 2022-03-18 | 458-250-0XXX | T-MOBILE USA, INC. | 6529 | EUGENE | OR |
| 2022-03-18 | 458-250-1XXX | T-MOBILE USA, INC. | 6529 | EUGENE | OR |
| 2022-03-18 | 626-816-1XXX | T-MOBILE USA, INC. | 6529 | EL MONTE | CA |
| 2022-03-18 | 626-816-2XXX | T-MOBILE USA, INC. | 6529 | EL MONTE | CA |
| 2022-03-18 | 707-313-2XXX | T-MOBILE USA, INC. | 6529 | UKIAH | CA |
| 2022-03-18 | 707-671-8XXX | T-MOBILE USA, INC. | 6529 | UKIAH | CA |
| 2022-03-18 | 707-914-9XXX | T-MOBILE USA, INC. | 6529 | FRFLD-SUIS | CA |
| 2022-03-18 | 951-593-5XXX | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
| 2022-03-18 | 951-593-6XXX | T-MOBILE USA, INC. | 6529 | HEMT HEMT | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.