NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
2013-01-31 806-406 0XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BEAN TX
2013-01-31 813-512 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2013-01-31 901-509 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J MEMPHIS TN
2013-01-31 902-948 not yet reported which blocks → Bell Mobility Aliant 329A Charlottetown —
2013-01-30 306-998 not yet reported which blocks → Bell Mobility 6574 Saskatoon —
2013-01-30 401-999 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2013-01-30 431-944 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2013-01-30 438-948 not yet reported which blocks → Bell Mobility 6574 Montreal —
2013-01-30 475-675 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F SEYMOUR CT
2013-01-30 504-505 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2013-01-30 647-944 not yet reported which blocks → Bell Mobility 6574 Toronto —
2013-01-30 778-944 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2013-01-30 862-404 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WHIPPANY NJ
2013-01-30 906-275 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C HOUGHTON MI
2013-01-29 210-717 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2013-01-29 385-722 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALT LAKE UT
2013-01-29 415-635 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 SNFC CNTRL CA
2013-01-29 541-816 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 MEDFORD OR
2013-01-29 661-473 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BKFD SOUTH CA
2013-01-29 706-873 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C SPARTA GA
2013-01-29 803-662 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ORANGEBURG SC
2013-01-28 289-560 not yet reported which blocks → Comwave Networks 160G West Lincoln —
2013-01-28 289-770 not yet reported which blocks → Comwave Networks 160G Grimsby —
2013-01-28 289-960 not yet reported which blocks → Comwave Networks 160G Caledonia —
2013-01-28 385-210 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-01-28 440-475 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2013-01-28 440-559 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2013-01-28 440-615 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2013-01-28 440-618 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BRECKSVL OH
2013-01-28 440-619 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BRECKSVL OH
2013-01-28 440-651 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2013-01-28 440-712 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BRECKSVL OH
2013-01-28 440-770 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BRECKSVL OH
2013-01-28 440-802 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BRECKSVL OH
2013-01-28 440-806 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2013-01-28 587-944 not yet reported which blocks → Bell Mobility 6574 Calgary —
2013-01-28 614-393 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2013-01-28 614-709 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2013-01-28 682-582 0–9 XXXall 10 · 3 holders which blocks → SOUTHWESTERN BELL 9533 WEATHERFD TX
2013-01-28 720-360 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2013-01-28 919-670 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 RALEIGH NC
2013-01-25 249-222 not yet reported which blocks → TELUS Integrated Communications 2782 Rosseau —
2013-01-25 249-224 not yet reported which blocks → TELUS Integrated Communications 2782 Otter Lake —
2013-01-25 469-204 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 DALLAS TX
2013-01-25 587-270 not yet reported which blocks → Shaw Telecom Inc. 497E Brooks —
2013-01-25 602-582 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-01-25 602-657 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-01-25 609-608 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J PRINCETON NJ
2013-01-25 715-806 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SCANDINAVIA TEL. CO. 0945 IOLA WI
2013-01-25 859-636 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SPRINGFLD KY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.