NumberResearchRecent prefix assignments
341 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
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2003-10-01 | 608-412 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → | UNITED STATES CELLULAR - WI | 6274 | PRARIDCHIN | WI |
| 2003-10-01 | 803-747 | 5XXX6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | ORANGEBURG | SC |
| 2003-10-01 | 905-231 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Ajax-Pickering | — |
| 2003-10-01 | 905-250 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | South Pickering | — |
| 2003-10-01 | 905-486 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Port Credit | — |
| 2003-10-01 | 905-556 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Whitby | — |
| 2003-10-01 | 905-919 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Clarkson | — |
| 2003-10-01 | 910-717 | 7XXX8XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FAYETTEVL | NC |
| 2003-10-01 | 919-551 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - NC | 638E | ZEBULON | NC |
| 2003-09-30 | 208-201 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | IDAHOFALLS | ID |
| 2003-09-30 | 418-971 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Donnacona | — |
| 2003-09-30 | 605-750 | none assigned yet which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LENNOX | SD |
| 2003-09-30 | 778-386 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | New Westminster | — |
| 2003-09-30 | 778-389 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | New Westminster | — |
| 2003-09-30 | 806-361 | not yet reported which blocks → | XIT TELECOMMUNICATIONS & TECHNOLOGY, INC. - TX | 7893 | HARTLEY | TX |
| 2003-09-30 | 806-635 | not yet reported which blocks → | XIT TELECOMMUNICATIONS & TECHNOLOGY, INC. - TX | 7893 | CHANNING | TX |
| 2003-09-30 | 905-409 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ajax-Pickering | — |
| 2003-09-29 | 508-575 | not yet reported which blocks → | NEP, LLC | 174A | TAUNTON | MA |
| 2003-09-29 | 519-404 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| 2003-09-29 | 585-278 | 0–9 XXXall 10 · 4 holders which blocks → | FRONTIER TELEPHONE OF ROCHESTER, INC. | 0121 | ROCHESTER | NY |
| 2003-09-29 | 613-449 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kingston | — |
| 2003-09-29 | 617-280 | not yet reported which blocks → | NEP, LLC | 174A | CAMBRIDGE | MA |
| 2003-09-29 | 647-321 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2003-09-29 | 778-593 | not yet reported which blocks → | TELUS | 8086 | Newton | — |
| 2003-09-29 | 781-212 | not yet reported which blocks → | NEP, LLC | 174A | WALTHAM | MA |
| 2003-09-29 | 902-312 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Bridgetown | — |
| 2003-09-29 | 905-401 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St. Catharines-Thorold | — |
| 2003-09-29 | 905-906 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2003-09-29 | 978-217 | not yet reported which blocks → | NEP, LLC | 174A | SUDBURY | MA |
| 2003-09-26 | 251-261 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MCCULLOUGH | AL |
| 2003-09-26 | 801-795 | 0–9 XXXwhole prefix which blocks → | FIRSTDIGITAL TELECOM, LLC - UT | 5727 | SALT LAKE | UT |
| 2003-09-26 | 843-733 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | CONWAY | SC |
| 2003-09-26 | 979-422 | 0–9 XXXwhole prefix which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BRYAN | TX |
| 2003-09-25 | 403-969 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2003-09-25 | 478-257 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | MACON | GA |
| 2003-09-25 | 519-447 | not yet reported which blocks → | TELUS Mobility | 8303 | Owen Sound | — |
| 2003-09-25 | 613-243 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Belleville | — |
| 2003-09-25 | 613-503 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Picton | — |
| 2003-09-25 | 641-234 | not yet reported which blocks → | IOWA RSA 2 LIMITED PARTNERSHIP DBA CHAT MOBILITY | 9572 | MOUNT AYR | IA |
| 2003-09-25 | 647-688 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2003-09-25 | 780-668 | not yet reported which blocks → | TELUS Mobility | 8301 | Edmonton | — |
| 2003-09-25 | 805-858 | 0XXX3XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNLUSOBSPO | CA |
| 2003-09-25 | 863-661 | none assigned yet which blocks → | METROPCS NETWORKS, LLC | 899D | LAKELAND | FL |
| 2003-09-25 | 865-288 | 0–9 XXXall 10 · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | CONCORD | TN |
| 2003-09-25 | 918-290 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | STROUD | OK |
| 2003-09-25 | 919-532 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | RALEIGH | NC |
| 2003-09-24 | 218-231 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - MN | 184D | HIBBING | MN |
| 2003-09-24 | 218-274 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - MN | 184D | CHISHOLM | MN |
| 2003-09-24 | 250-535 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oliver | — |
| 2003-09-24 | 251-253 | 6XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ATMORE | AL |
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.