NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2013-02-05 720-463 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CO 026D DECKERS CO
2013-02-05 720-590 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2013-02-05 769-208 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G JACKSON MS
2013-02-05 785-352 4XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS 7593 ROSSVILLE KS
2013-02-05 919-973 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K DURHAM NC
2013-02-05 919-977 0–9 XXXall 10 · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RALEIGH NC
2013-02-05 980-237 0–9 XXXwhole prefix which blocks → TWC IP ENABLED SERVICES, LLC 793K CHARLOTTE NC
2013-02-05 980-781 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CONCORD NC
2013-02-04 352-606 0–9 XXXall 10 · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 WEEKICHSPG FL
2013-02-04 352-627 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GAINESVL FL
2013-02-04 404-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D ATLANTA GA
2013-02-04 409-444 0–9 XXXall 10 · 3 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D BEAUMONT TX
2013-02-04 424-291 0–9 XXXall 10 · 8 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SNMN SNMN CA
2013-02-04 424-292 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CMTN GRDN CA
2013-02-04 424-297 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HAWTHORNE CA
2013-02-04 424-328 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LOMITA CA
2013-02-04 562-273 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WHITTIER CA
2013-02-04 602-500 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2013-02-04 626-225 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LA PUENTE CA
2013-02-04 702-830 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NV 4805 LAS VEGAS NV
2013-02-04 714-266 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BUENA PARK CA
2013-02-04 720-723 0–9 XXXall 10 · 3 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 3467 DENVER CO
2013-02-04 819-833 not yet reported which blocks → Fido Solutions Inc. 5643 Mont-Laurier —
2013-02-04 832-833 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 HOUSTON TX
2013-02-04 904-602 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ORANGEPARK FL
2013-02-04 909-360 0–9 XXXall 10 · 8 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J UPLAND CA
2013-02-04 949-445 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SADLBK VLY CA
2013-02-04 951-339 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CORONA CA
2013-02-04 951-363 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MORENO CA
2013-02-02 734-739 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PINCKNEY MI
2013-02-01 234-251 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K UNIONTOWN OH
2013-02-01 248-216 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2013-02-01 248-222 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2013-02-01 248-297 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CLARKSTON MI
2013-02-01 248-492 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CLARKSTON MI
2013-02-01 248-638 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2013-02-01 248-718 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2013-02-01 248-831 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2013-02-01 321-732 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C ORLANDO FL
2013-02-01 323-498 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LSAN DA 14 CA
2013-02-01 402-347 0–9 XXXall 10 · 5 holders which blocks → PBN, LLC - NE 975G NORFOLK NE
2013-02-01 512-822 0–9 XXXall 10 · 3 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D AUSTIN TX
2013-02-01 626-427 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2013-02-01 636-429 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F EUREKA MO
2013-02-01 651-413 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 STILLWATER MN
2013-02-01 661-441 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J PLDL PLDL CA
2013-02-01 661-471 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LANCASTER CA
2013-02-01 714-294 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ANAHEIM CA
2013-02-01 714-559 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SANTA ANA CA
2013-02-01 720-380 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO

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.