NumberResearchRecent prefix assignments
5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 626-644 | T-MOBILE USA, INC. | 6529 | PSDN PSDN | CA | |
| 626-662 | T-MOBILE USA, INC. | 6529 | ARCADIA | CA | |
| 626-676 | T-MOBILE USA, INC. | 6529 | PSDN PSDN | CA | |
| 626-679 | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA | |
| 626-726 | T-MOBILE USA, INC. | 6529 | ARCADIA | CA | |
| 626-736 | T-MOBILE USA, INC. | 6529 | COVINA | CA | |
| 626-766 | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA | |
| 626-787 | T-MOBILE USA, INC. | 6529 | PSDN PSDN | CA | |
| 626-831 | T-MOBILE USA, INC. | 6529 | PSDN PSDN | CA | |
| 626-926 | T-MOBILE USA, INC. | 6529 | COVINA | CA | |
| 626-975 | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA | |
| 628-358 | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA | |
| 630-202 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-205 | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL | |
| 630-327 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-330 | T-MOBILE USA, INC. | 6529 | ELMHURST | IL | |
| 630-333 | T-MOBILE USA, INC. | 6529 | ELMHURST | IL | |
| 630-335 | T-MOBILE USA, INC. | 6529 | NAPERVILLE | IL | |
| 630-361 | T-MOBILE USA, INC. | 6529 | ITASCA | IL | |
| 630-417 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-430 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-452 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-461 | T-MOBILE USA, INC. | 6529 | ROSELLE | IL | |
| 630-479 | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL | |
| 630-514 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-656 | T-MOBILE USA, INC. | 6529 | LOMBARD | IL | |
| 630-660 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-667 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-669 | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL | |
| 630-670 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-673 | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL | |
| 630-674 | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL | |
| 630-675 | T-MOBILE USA, INC. | 6529 | ROSELLE | IL | |
| 630-677 | T-MOBILE USA, INC. | 6529 | GENEVA | IL | |
| 630-697 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-728 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-742 | T-MOBILE USA, INC. | 6529 | NAPERVILLE | IL | |
| 630-745 | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL | |
| 630-747 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-774 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-781 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-816 | T-MOBILE USA, INC. | 6529 | NORTHBROOK | IL | |
| 630-865 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-886 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-918 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-923 | T-MOBILE USA, INC. | 6529 | WHEATON | IL | |
| 630-926 | T-MOBILE USA, INC. | 6529 | LA GRANGE | IL | |
| 630-930 | T-MOBILE USA, INC. | 6529 | ELMHURST | IL | |
| 630-965 | T-MOBILE USA, INC. | 6529 | BARTLETT | IL | |
| 636-262 | T-MOBILE USA, INC. | 6529 | CHESTERFLD | MO |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.