NumberResearchRecent prefix assignments
338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
Most active assignees, last 30 days
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2001-11-01 | 989-516 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | WESTBRANCH | MI |
| 2001-11-01 | 989-563 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | ROSCOMMON | MI |
| 2001-11-01 | 989-688 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | GAYLORD | MI |
| 2001-11-01 | 989-764 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | OSCODA | MI |
| 2001-11-01 | 989-885 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | CLARE | MI |
| 2001-11-01 | 989-936 | not yet reported which blocks → | TELNET WORLDWIDE, INC. | 817J | OWOSSO | MI |
| 2001-10-31 | 240-505 | not yet reported which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN3 | MD |
| 2001-10-31 | 250-210 | not yet reported which blocks → | TELUS Mobility | 8301 | Chemainus | — |
| 2001-10-31 | 250-221 | not yet reported which blocks → | TELUS Mobility | 8301 | Ganges | — |
| 2001-10-31 | 250-228 | not yet reported which blocks → | TELUS Mobility | 8301 | Parksville | — |
| 2001-10-31 | 250-230 | not yet reported which blocks → | TELUS Mobility | 8301 | Port Hardy | — |
| 2001-10-31 | 250-266 | not yet reported which blocks → | TELUS Mobility | 8301 | Ucluelet | — |
| 2001-10-31 | 409-632 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2001-10-31 | 425-367 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | EVERETT | WA |
| 2001-10-31 | 615-657 | 3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ASHLAND CY | TN |
| 2001-10-31 | 615-715 | none assigned yet which blocks → | POWERTEL NASHVILLE LICENSES, INC. | 7476 | NASHVILLE | TN |
| 2001-10-31 | 757-754 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NRFOLKZON2 | VA |
| 2001-10-31 | 787-597 | 8XXX9XXX which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2001-10-31 | 803-671 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BARNWELL | SC |
| 2001-10-31 | 815-615 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | MENDOTA | IL |
| 2001-10-31 | 815-716 | 1XXX5XXX8XXX9XXX · 4 holders which blocks → | METROPCS, INC. | 5562 | STERLING | IL |
| 2001-10-30 | 225-288 | not yet reported which blocks → | VOICESTREAM GSM I, LLC | 150C | BATONROUGE | LA |
| 2001-10-30 | 250-218 | not yet reported which blocks → | TELUS Mobility | 8301 | Courtenay | — |
| 2001-10-30 | 250-219 | not yet reported which blocks → | TELUS Mobility | 8301 | Dawson Creek | — |
| 2001-10-30 | 250-231 | not yet reported which blocks → | TELUS Mobility | 8301 | Trail | — |
| 2001-10-30 | 250-267 | not yet reported which blocks → | TELUS Mobility | 8301 | Williams Lake | — |
| 2001-10-30 | 334-804 | 0XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ANDALUSIA | AL |
| 2001-10-30 | 334-805 | 1XXX2XXX5XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DOTHAN | AL |
| 2001-10-30 | 334-816 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | FORESTHOME | AL |
| 2001-10-30 | 334-817 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | SAMSON | AL |
| 2001-10-30 | 334-818 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ANDALUSIA | AL |
| 2001-10-30 | 504-261 | not yet reported which blocks → | VOICESTREAM GSM I, LLC | 150C | NEWORLEANS | LA |
| 2001-10-30 | 504-339 | not yet reported which blocks → | VOICESTREAM GSM I, LLC | 150C | KENNER | LA |
| 2001-10-30 | 504-975 | not yet reported which blocks → | VOICESTREAM GSM I, LLC | 150C | NEWORLEANS | LA |
| 2001-10-30 | 515-208 | 5XXX8XXX9XXX which blocks → | T-MOBILE USA, INC. | 6529 | DES MOINES | IA |
| 2001-10-30 | 517-915 | 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → | ACD TELECOM, INC. - MI | 3535 | FOWLERVL | MI |
| 2001-10-30 | 517-921 | 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → | ACD TELECOM, INC. - MI | 3535 | ADDISON | MI |
| 2001-10-30 | 517-964 | not yet reported which blocks → | ACD TELECOM, INC. - MI | 3535 | HILLSDALE | MI |
| 2001-10-30 | 563-528 | 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | DAVENPORT | IA |
| 2001-10-30 | 631-240 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SMITHTOWN | NY |
| 2001-10-30 | 641-332 | 2XXX3XXX4XXX6XXX · 2 holders which blocks → | GUTHRIE TELECOMMUNICATIONS NETWORK, INC. - IA | 5840 | GUTHRIECTR | IA |
| 2001-10-30 | 775-297 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MATRIX TELECOM, LLC. S/I/I TNCI - NV | 2817 | CARSONCITY | NV |
| 2001-10-30 | 828-362 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | MURPHY | NC |
| 2001-10-30 | 828-363 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | FRANKLIN | NC |
| 2001-10-30 | 828-364 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CASHIERS | NC |
| 2001-10-30 | 937-270 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH |
| 2001-10-30 | 937-718 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DAYTON | OH |
| 2001-10-30 | 978-894 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | TEMPLETON | MA |
| 2001-10-30 | 978-910 | 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | SALEM | MA |
| 2001-10-30 | 978-961 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | NEWBURYPT | MA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.