NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
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
2019-02-08 912-621 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E LUMBERCITY GA
2019-02-08 914-415 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN02 NY
2019-02-08 916-931 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2019-02-08 947-622 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E LAKE ORION MI
2019-02-08 980-324 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K KANNAPOLIS NC
2019-02-08 984-262 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E PRINCETON NC
2019-02-07 202-217 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2019-02-07 431-534 not yet reported which blocks → Bell West Inc. 2933 Amaranth —
2019-02-07 431-535 not yet reported which blocks → Bell West Inc. 2933 Anola —
2019-02-07 431-536 not yet reported which blocks → Bell West Inc. 2933 Lorette —
2019-02-07 431-537 not yet reported which blocks → Bell West Inc. 2933 Oakbank —
2019-02-07 712-521 0–9 XXXall 10 · 7 holders which blocks → BTC, INC. - IA 156C GLENWOOD IA
2019-02-07 857-341 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E BELMONT MA
2019-02-07 913-349 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E DE SOTO KS
2019-02-06 202-920 0–9 XXXall 10 · 6 holders which blocks → HD CARRIER LLC 321J WSHNGTNZN1 DC
2019-02-06 206-640 0–9 XXXall 10 · 3 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2019-02-06 469-668 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2019-02-06 510-983 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E FRNK OLIVR CA
2019-02-06 628-265 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E INVERNESS CA
2019-02-06 636-829 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 HIGH RIDGE MO
2019-02-06 650-459 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E HALFMOONBY CA
2019-02-06 682-287 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2019-02-06 807-234 not yet reported which blocks → TELUS Integrated Communications 2782 Thunder Bay —
2019-02-06 909-715 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CRESTLINE CA
2019-02-05 365-398 not yet reported which blocks → Iristel Inc. 154E Cobourg —
2019-02-05 424-427 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2019-02-05 424-502 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E EL SEGUNDO CA
2019-02-05 478-210 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D MONTROSE GA
2019-02-05 478-395 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D TOOMSBORO GA
2019-02-05 520-783 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TUCSON AZ
2019-02-05 713-903 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C BAYTOWN TX
2019-02-05 805-790 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E EL RIO CA
2019-02-05 912-301 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D FARGO GA
2019-02-05 912-913 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D TYBEE IS GA
2019-02-04 438-362 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-02-04 651-370 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J TWINCITIES MN
2019-02-04 873-553 not yet reported which blocks → Videotron Ltd. 8306 St-Felix-de-Kingsey —
2019-02-01 207-600 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H GORHAM ME
2019-02-01 213-732 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LSAN DA 12 CA
2019-02-01 213-866 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H LSAN DA 03 CA
2019-02-01 431-671 not yet reported which blocks → Bell West Inc. 2933 Altona —
2019-02-01 431-672 not yet reported which blocks → Bell West Inc. 2933 Eriksdale —
2019-02-01 431-673 not yet reported which blocks → Bell West Inc. 2933 Grunthal —
2019-02-01 431-674 not yet reported which blocks → Bell West Inc. 2933 Niverville —
2019-02-01 431-675 not yet reported which blocks → Bell West Inc. 2933 Ste. Anne —
2019-02-01 431-676 not yet reported which blocks → Bell West Inc. 2933 Teulon —
2019-02-01 561-446 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-02-01 786-668 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2019-02-01 929-508 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN05 NY
2019-01-31 236-969 not yet reported which blocks → TELUS Mobility 8301 Victoria —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.