NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2019-09-06 405-674 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H MUSTANG OK
2019-09-06 438-430 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-09-06 540-594 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G MINERAL VA
2019-09-06 571-498 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LEESBURG VA
2019-09-06 579-839 not yet reported which blocks → TELUS Quebec 2243 Beauharnois —
2019-09-06 579-840 not yet reported which blocks → TELUS Quebec 2243 Chateauguay —
2019-09-06 579-845 not yet reported which blocks → TELUS Quebec 2243 St-Constant —
2019-09-06 579-846 not yet reported which blocks → TELUS Quebec 2243 Ste-Martine —
2019-09-06 647-597 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-09-06 657-395 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 YORBALINDA CA
2019-09-06 669-297 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNJS NORTH CA
2019-09-06 716-494 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E EDEN NY
2019-09-06 716-527 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E WESTSENECA NY
2019-09-06 757-801 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G CHINCOTEGU VA
2019-09-06 804-373 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G DINWIDDIE VA
2019-09-06 804-619 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G MECHANCSVL VA
2019-09-06 806-695 9XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 DARROUZETT TX
2019-09-06 825-668 not yet reported which blocks → Bell Mobility 6574 Calgary —
2019-09-06 870-621 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 TEXARKANA AR
2019-09-06 941-336 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PTCHARLOTT FL
2019-09-06 949-617 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 IRVINE CA
2019-09-06 949-674 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NEWPORTBCH CA
2019-09-05 223-221 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E LANCASTER PA
2019-09-05 223-224 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E MCVEYTOWN PA
2019-09-05 254-348 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C LAKESIDVLG TX
2019-09-05 254-356 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C BLUM TX
2019-09-05 254-357 0XXX7XXX8XXX9XXX · 3 holders which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 ROGERS TX
2019-09-05 269-291 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G OLIVET MI
2019-09-05 337-677 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LK CHARLES LA
2019-09-05 430-251 2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 BOGATA TX
2019-09-05 438-277 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-09-05 438-280 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-09-05 470-507 0–9 XXXall 10 · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K ATLANTA SO GA
2019-09-05 502-527 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF KENTUCKY, LLC - KY 035H MILTON KY
2019-09-05 731-283 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F DYER TN
2019-09-05 803-882 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H PROSPERITY SC
2019-09-05 803-884 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H BLACKVILLE SC
2019-09-05 803-886 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H SRNGFLSLLY SC
2019-09-05 806-314 5XXX6XXX9XXX · 2 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 BOOKER TX
2019-09-05 806-691 0XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 CROSBYTON TX
2019-09-05 806-693 9XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 FOLLETT TX
2019-09-05 806-694 9XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 SPEARMAN TX
2019-09-05 816-643 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY MO
2019-09-05 825-341 not yet reported which blocks → Bell Mobility 6574 Calgary —
2019-09-05 843-994 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H ISLE PALMS SC
2019-09-05 920-601 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F WRIGHTSTN WI
2019-09-05 931-280 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 BAXTER TN
2019-09-05 986-600 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H MOSCOW ID
2019-09-04 249-477 not yet reported which blocks → ISP Telecom Inc. 4727 Lindsay —
2019-09-04 249-886 not yet reported which blocks → Rogers Communications Canada Inc. 571G Pefferlaw —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.