NumberResearchRecent prefix assignments
360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026
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
Sep 2026
Aug 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2012-06-05 | 405-896 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - OK | 409F | OKLA CITY | OK |
| 2012-06-05 | 502-440 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | LA GRANGE | KY |
| 2012-06-05 | 505-639 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | ALBUQURQUE | NM |
| 2012-06-05 | 717-547 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | HARISBGZN1 | PA |
| 2012-06-05 | 772-999 | 0–9 XXXall 10 · 6 holders which blocks → | TERRA NOVA TELECOM, INC. - FL | 382G | VERO BEACH | FL |
| 2012-06-04 | 239-215 | 0–9 XXXall 10 · 5 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | FORT MYERS | FL |
| 2012-06-01 | 201-380 | 0–9 XXXall 10 · 4 holders which blocks → | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | KEARNY | NJ |
| 2012-06-01 | 321-209 | 0–9 XXXall 10 · 2 holders which blocks → | PEERLESS NETWORK OF FLORIDA, LLC - FL | 902E | ORLANDO | FL |
| 2012-06-01 | 450-485 | not yet reported which blocks → | Iristel Inc. | 154E | St-Eustache | — |
| 2012-06-01 | 581-200 | not yet reported which blocks → | Iristel Inc. | 154E | Alma | — |
| 2012-06-01 | 581-500 | not yet reported which blocks → | Iristel Inc. | 154E | Levis | — |
| 2012-06-01 | 819-201 | not yet reported which blocks → | Iristel Inc. | 154E | Magog | — |
| 2012-05-31 | 267-225 | 0–9 XXXwhole prefix which blocks → | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | PHLDLPHZN1 | PA |
| 2012-05-31 | 289-864 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Brampton | — |
| 2012-05-31 | 305-209 | 0–9 XXXwhole prefix which blocks → | PEERLESS NETWORK OF FLORIDA, LLC - FL | 902E | KEYS | FL |
| 2012-05-31 | 581-377 | not yet reported which blocks → | TELUS Quebec | 2243 | Leeds | — |
| 2012-05-31 | 581-378 | not yet reported which blocks → | TELUS Quebec | 2243 | Saint-Odilon | — |
| 2012-05-31 | 581-379 | not yet reported which blocks → | TELUS Quebec | 2243 | Sainte-Rose | — |
| 2012-05-31 | 581-380 | not yet reported which blocks → | TELUS Quebec | 2243 | Sainte-Justine | — |
| 2012-05-31 | 602-715 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2012-05-31 | 647-848 | not yet reported which blocks → | Fibernetics Corporation | 464D | Toronto | — |
| 2012-05-31 | 705-501 | not yet reported which blocks → | Fibernetics Corporation | 464D | Espanola | — |
| 2012-05-31 | 724-617 | 0–9 XXXall 10 · 7 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | CLYMER | PA |
| 2012-05-31 | 769-206 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MS | 992E | UTICA | MS |
| 2012-05-31 | 814-812 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ERIE | PA |
| 2012-05-30 | 323-452 | 0–9 XXXall 10 · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | LSAN DA 13 | CA |
| 2012-05-30 | 469-319 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | SEAGOVILLE | TX |
| 2012-05-30 | 631-257 | 0–9 XXXall 10 · 7 holders which blocks → | CABLEVISION LIGHTPATH, INC. - NY | 7126 | SMITHTOWN | NY |
| 2012-05-30 | 763-240 | 0XXX1XXX2XXX · 3 holders which blocks → | WIRELESS COMMUNICATIONS VENTURE | 4609 | BIG LAKE | MN |
| 2012-05-30 | 779-205 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JOLIET | IL |
| 2012-05-30 | 786-608 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | MIAMI | FL |
| 2012-05-30 | 907-292 | 0XXX1XXX which blocks → | CORDOVA WIRELESS COMMUNICATIONS, INC. | 6882 | YAKUTAT | AK |
| 2012-05-29 | 210-540 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | SANANTONIO | TX |
| 2012-05-29 | 226-675 | not yet reported which blocks → | Managed Network Systems Inc. | 2776 | La Salle | — |
| 2012-05-29 | 226-676 | not yet reported which blocks → | Managed Network Systems Inc. | 2776 | Tecumseh | — |
| 2012-05-29 | 320-318 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MN | 980E | RUSH CITY | MN |
| 2012-05-29 | 385-374 | 0–9 XXXall 10 · 6 holders which blocks → | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7176 | LEHI | UT |
| 2012-05-29 | 438-931 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-05-29 | 470-203 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - GA | 983E | LUTHERSVL | GA |
| 2012-05-29 | 647-657 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2012-05-29 | 682-209 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | ARLINGTON | TX |
| 2012-05-29 | 832-707 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2012-05-29 | 832-712 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | HOUSTON | TX |
| 2012-05-29 | 862-419 | 0–9 XXXall 10 · 8 holders which blocks → | CSC VOICE, LLC | 612K | SUCCASUNNA | NJ |
| 2012-05-25 | 226-306 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Listowel | — |
| 2012-05-25 | 289-995 | not yet reported which blocks → | TELUS Mobility | 8303 | Aurora | — |
| 2012-05-25 | 415-463 | 0–9 XXXall 10 · 8 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNFC MT-EV | CA |
| 2012-05-25 | 450-636 | not yet reported which blocks → | Videotron Ltd. | 8306 | Hemmingford | — |
| 2012-05-25 | 450-637 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Chrysostome | — |
| 2012-05-25 | 450-843 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ormstown | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.