NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-05-17 540-676 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ROANOKE VA
2012-05-17 616-275 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K CALEDONIA MI
2012-05-17 786-257 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2012-05-17 786-391 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2012-05-17 919-579 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SANFORD NC
2012-05-16 240-488 0–9 XXXall 10 · 8 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - MD 836G OAKLAND MD
2012-05-16 609-673 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J PRINCETON NJ
2012-05-15 219-240 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 GARY IN
2012-05-15 226-636 not yet reported which blocks → Distributel 082E London —
2012-05-15 226-666 not yet reported which blocks → Fibernetics Corporation 464D Kitchener-Waterloo —
2012-05-15 289-919 not yet reported which blocks → Distributel 082E Hamilton —
2012-05-15 289-931 not yet reported which blocks → TELUS Mobility 8303 St. Catharines-Thorold —
2012-05-15 289-996 not yet reported which blocks → TELUS Mobility 8303 Oshawa —
2012-05-15 385-209 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 KAYSVILLE UT
2012-05-15 405-569 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-05-15 504-425 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
2012-05-15 602-422 0–9 XXXall 10 · 4 holders which blocks → RE-INVENT TELECOM, LLC - AZ 663G PHOENIX AZ
2012-05-15 613-319 not yet reported which blocks → Distributel 082E Ottawa-Hull —
2012-05-15 786-501 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MIAMI FL
2012-05-15 918-780 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 TULSA OK
2012-05-15 918-901 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TULSA OK
2012-05-14 404-465 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-05-14 405-859 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-05-14 518-417 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 ALBANY NY
2012-05-14 609-727 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J ATLNTIC CY NJ
2012-05-14 832-765 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 HOUSTON TX
2012-05-14 856-320 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MERCHANTVL NJ
2012-05-14 864-321 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENWOOD SC
2012-05-11 209-226 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 TURLOCK CA
2012-05-11 231-291 0–9 XXXwhole prefix which blocks → TELNET WORLDWIDE, INC. 817J MUSKEGON MI
2012-05-11 360-688 0–9 XXXall 10 · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 OLYMPIA WA
2012-05-11 502-389 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LOUISVILLE KY
2012-05-11 804-404 0–9 XXXall 10 · 3 holders which blocks → VERIZON VIRGINIA, INC. 9213 RICHMOND VA
2012-05-11 808-364 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HONOLULU HI
2012-05-11 808-444 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → SERVPAC INCORPORATED - HI 517G KAUNAKAKAI HI
2012-05-11 808-995 8XXX which blocks → SERVPAC INCORPORATED - HI 517G LANAI CITY HI
2012-05-11 816-621 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 KANSASCITY MO
2012-05-10 317-880 0–9 XXXwhole prefix which blocks → INDIANA BELL TEL CO INC 9325 INDIANAPLS IN
2012-05-10 716-268 0–9 XXXall 10 · 8 holders which blocks → TC SYSTEMS, INC. - NY 7140 DUNKIRK NY
2012-05-10 774-301 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FALL RIVER MA
2012-05-10 870-302 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARRISON AR
2012-05-10 913-225 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 KANSASCITY KS
2012-05-10 918-345 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CATOOSA OK
2012-05-10 918-417 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 JENKS OK
2012-05-10 918-679 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CLAREMORE OK
2012-05-10 918-701 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 JENKS OK
2012-05-10 918-800 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CATOOSA OK
2012-05-10 918-965 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CLAREMORE OK
2012-05-10 989-394 0–9 XXXall 10 · 6 holders which blocks → 123.NET, LLC 2550 BEAVERTON MI
2012-05-09 404-491 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.