NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2012-05-15 786-501 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
2012-05-09 770-580 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2012-05-08 385-290 0–9 XXXall 10 · 5 holders which blocks → FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALT LAKE UT
2012-05-08 385-312 0–9 XXXall 10 · 3 holders which blocks → FIRSTDIGITAL COMMUNICATIONS, LLC 716D PROVO UT
2012-05-08 507-502 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - MN 184D NO CHESTER MN
2012-05-08 520-277 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AZ 630E WHITLOW AZ
2012-05-08 520-353 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - AZ 630E BISBEE AZ
2012-05-08 605-519 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2012-05-08 616-449 0–9 XXXall 10 · 5 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J FREEPORT MI
2012-05-08 865-315 0–9 XXXall 10 · 3 holders which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 KNOXVILLE TN
2012-05-08 970-751 not yet reported which blocks → UNION TELEPHONE COMPANY 013B DELTA CO
2012-05-08 970-770 not yet reported which blocks → UNION TELEPHONE COMPANY 013B MONTROSE CO
2012-05-07 269-336 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAWYER MI
2012-05-07 602-832 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-05-07 681-260 0–9 XXXall 10 · 5 holders which blocks → FRONTIER WEST VIRGINIA INC. 9214 MARTINSBG WV
2012-05-07 681-323 0–9 XXXall 10 · 4 holders which blocks → CITIZENS TEL CO OF WV DBA FRONTIER OF WV 0270 BLUEFIELD WV
2012-05-07 681-622 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER WEST VIRGINIA INC. 9214 CLARKSBURG WV
2012-05-07 701-713 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 6568 WILLISTON ND
2012-05-07 760-338 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CALIFORNCY CA

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.