NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2012-12-14 819-654 not yet reported which blocks → TELUS Quebec 2243 Ottawa-Hull —
2012-12-13 210-708 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 SANANTONIO TX
2012-12-13 440-432 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEREA OH
2012-12-13 440-438 0–9 XXXall 10 · 2 holders which blocks → SIGECOM, LLC DBA WOW INTERNET CABLE AND PHONE 735E TRINITY OH
2012-12-13 440-509 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BEREA OH
2012-12-13 440-515 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLCREST OH
2012-12-13 440-631 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 VICTORY OH
2012-12-13 440-702 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLCREST OH
2012-12-13 469-410 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 TERRELL TX
2012-12-13 581-266 not yet reported which blocks → Telecommunications Xittel Inc 247F Black Lake —
2012-12-13 581-267 not yet reported which blocks → Telecommunications Xittel Inc 247F Tring Jonction —
2012-12-13 581-268 not yet reported which blocks → Telecommunications Xittel Inc 247F Thetford Mines —
2012-12-13 581-269 not yet reported which blocks → Telecommunications Xittel Inc 247F Stratford —
2012-12-13 581-270 not yet reported which blocks → Telecommunications Xittel Inc 247F St-Ferdinand-D'Halifax —
2012-12-13 614-928 0–9 XXXall 10 · 3 holders which blocks → SIGECOM, LLC DBA WOW INTERNET CABLE AND PHONE 735E COLUMBUS OH
2012-12-13 720-737 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2012-12-13 727-350 0–9 XXXall 10 · 5 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L STPETERSBG FL
2012-12-13 832-831 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J HOUSTON TX
2012-12-13 832-845 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 HOUSTON TX
2012-12-13 832-901 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 HOUSTON TX
2012-12-13 867-373 not yet reported which blocks → Bell Mobility 6574 Fort Providence —
2012-12-13 867-374 not yet reported which blocks → Bell Mobility 6574 Tulita —
2012-12-13 915-519 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K EL PASO TX
2012-12-13 972-598 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2012-12-12 772-448 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 FORTPIERCE FL
2012-12-12 786-571 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NORTH DADE FL
2012-12-11 469-408 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2012-12-11 832-779 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2012-12-11 832-810 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HSTNSUBURB TX
2012-12-11 848-225 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F MIDDLETOWN NJ
2012-12-11 848-231 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 FREEHOLD NJ
2012-12-11 848-303 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 LONGBRANCH NJ
2012-12-11 915-201 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F EL PASO TX
2012-12-10 234-217 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WADSWORTH OH
2012-12-10 276-449 4XXX7XXX9XXX · 3 holders which blocks → SUNSET FIBER - VA 9809 DUFFIELD VA
2012-12-10 646-630 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-12-10 646-647 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-12-10 646-661 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-12-10 646-665 0–9 XXXall 10 · 4 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN01 NY
2012-12-10 646-757 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-12-10 917-242 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN04 NY
2012-12-10 917-624 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
2012-12-10 937-803 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → HORIZON SERVICES, INC. - OH 601G GREENFIELD OH
2012-12-10 952-202 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9631 TWINCITIES MN
2012-12-08 810-493 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2012-12-07 226-735 not yet reported which blocks → Hay Communications Co-operative ltd. 972G Exeter —
2012-12-07 234-307 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F LOUISVILLE OH
2012-12-07 406-606 0–9 XXXall 10 · 4 holders which blocks → TRI TEL, INC. - MT 935G BILLINGS MT
2012-12-07 510-298 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FRNK MAIN CA
2012-12-07 516-246 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN05 NY

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.