NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 27
ONVOY, LLC - NJ 20
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
2002-04-05 418-615 not yet reported which blocks → TELUS Quebec 2243 Chicoutimi —
2002-04-05 450-640 not yet reported which blocks → TELUS Quebec 2243 Longueuil —
2002-04-05 780-644 not yet reported which blocks → Bell West Inc. 2933 Edmonton —
2002-04-04 208-643 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - ID 7558 BLACKFOOT ID
2002-04-04 208-649 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF IDAHO, LLC - ID 7511 CALDWELL ID
2002-04-04 208-696 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - ID 7558 MT HOME ID
2002-04-04 208-697 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID 6565 NAMPA ID
2002-04-04 231-222 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 EASTJORDAN MI
2002-04-04 231-225 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FREMONT MI
2002-04-04 231-333 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CHEBOYGAN MI
2002-04-04 251-406 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2002-04-04 318-209 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINNFIELD LA
2002-04-04 318-301 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ST JOSEPH LA
2002-04-04 337-240 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2002-04-04 337-321 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2002-04-04 405-762 2XXX3XXX4XXX5XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 STILLWATER OK
2002-04-04 509-398 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 EPHRATA WA
2002-04-04 509-557 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OMAK WA
2002-04-04 509-560 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 OROVILLE WA
2002-04-04 509-563 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 COLVILLE WA
2002-04-04 509-566 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 POMEROY WA
2002-04-04 512-577 not yet reported which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
2002-04-04 580-732 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALVA OK
2002-04-04 580-794 1XXX3XXX5XXX7XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAIRVIEW OK
2002-04-04 580-884 1XXX4XXX6XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHEROKEE OK
2002-04-04 585-503 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ROCHESTER NY
2002-04-04 620-412 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 EMPORIA KS
2002-04-04 773-510 not yet reported which blocks → T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2002-04-04 812-608 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 TELL CITY IN
2002-04-04 812-621 3XXX4XXX5XXX6XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VERSAILLES IN
2002-04-04 812-632 2XXX3XXX4XXX6XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 FORTBRANCH IN
2002-04-04 812-635 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K PRINCETON IN
2002-04-04 812-641 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BOONVILLE IN
2002-04-04 928-224 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 WINSLOW AZ
2002-04-03 205-447 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 BIRMINGHAM AL
2002-04-03 205-478 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BIRMINGHAM AL
2002-04-03 208-808 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID 6565 BURLEY ID
2002-04-03 228-229 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2002-04-03 256-375 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLADEGA AL
2002-04-03 256-479 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 HUNTSVILLE AL
2002-04-03 256-483 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROGERSVL AL
2002-04-03 256-585 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
2002-04-03 309-606 0XXX1XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WYOMING IL
2002-04-03 309-767 3XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 KEWANEE IL
2002-04-03 334-669 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 MONTGOMERY AL
2002-04-03 405-863 0–9 XXXwhole prefix which blocks → UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2002-04-03 502-277 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ZONETON KY
2002-04-03 502-531 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SHEPHEDSVL KY
2002-04-03 502-904 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MTWASHIGTN KY
2002-04-03 513-795 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HAMILTON OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.