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
2014-04-08 415-961 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2014-04-08 419-432 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BETTSVILLE OH
2014-04-08 619-458 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2014-04-08 715-602 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F WAUPACA WI
2014-04-08 720-660 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2014-04-08 778-600 not yet reported which blocks → Comwave Networks 160G Victoria —
2014-04-08 778-780 not yet reported which blocks → Comwave Networks 160G Abbotsford —
2014-04-08 858-275 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG MRMS CA
2014-04-07 202-759 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - DC 6117 WSHNGTNZN1 DC
2014-04-07 202-791 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSHNGTNZN1 DC
2014-04-07 226-830 not yet reported which blocks → Comwave Networks 160G Chatham —
2014-04-07 226-831 not yet reported which blocks → Comwave Networks 160G Highgate —
2014-04-07 301-546 0–9 XXXwhole prefix which blocks → VERIZON MARYLAND, INC. 9212 WSHNGTNZN4 MD
2014-04-07 302-202 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DE 969E CAMDEN DE
2014-04-07 415-941 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC MT-EV CA
2014-04-07 423-641 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F CLEVELAND TN
2014-04-07 438-399 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2014-04-07 442-232 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OCSD CRLS CA
2014-04-07 470-499 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E BOGARTSTHM GA
2014-04-07 551-223 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F FAIR LAWN NJ
2014-04-07 579-277 not yet reported which blocks → Comwave Networks 160G Ste-Therese —
2014-04-07 579-278 not yet reported which blocks → Comwave Networks 160G St-Jerome —
2014-04-07 620-291 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 BENEDICT KS
2014-04-07 620-302 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 BUFFALO KS
2014-04-07 620-445 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 LAFONTAINE KS
2014-04-07 620-522 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 THAYER KS
2014-04-07 650-656 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2014-04-07 661-372 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E DELANO CA
2014-04-07 831-291 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA CRUZ CA
2014-04-07 860-809 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F LEBANON CT
2014-04-07 860-909 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F WINSTED CT
2014-04-04 202-750 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2014-04-04 206-597 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9638 SEATTLE WA
2014-04-04 234-320 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F SALEM OH
2014-04-04 239-703 0–9 XXXall 10 · 4 holders which blocks → ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND 7857 FORT MYERS FL
2014-04-04 385-213 0–9 XXXwhole prefix which blocks → ONVOY, LLC - UT 871E SALT LAKE UT
2014-04-04 415-769 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C SNFC JUNPR CA
2014-04-04 415-801 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC CNTRL CA
2014-04-04 424-345 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2014-04-04 431-486 not yet reported which blocks → TELUS Integrated Communications 2782 Morden —
2014-04-04 443-808 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F ANNAPOLIS MD
2014-04-04 506-983 not yet reported which blocks → TELUS Integrated Communications 2782 Miramichi —
2014-04-04 506-984 not yet reported which blocks → TELUS Integrated Communications 2782 Bathurst —
2014-04-04 581-986 not yet reported which blocks → Videotron Ltd. 328F Quebec —
2014-04-04 619-457 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2014-04-04 669-235 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C SNJS NORTH CA
2014-04-04 681-321 0–9 XXXall 10 · 4 holders which blocks → FIBERNET, LLC - WV 4095 SALEM WV
2014-04-04 754-701 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 FTLAUDERDL FL
2014-04-04 778-643 not yet reported which blocks → CityWest Cable (North) Corp - BC 705F Telkwa —
2014-04-04 813-540 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPAEST FL

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.