Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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
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
2016-06-23 256-803 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F BOAZ AL
2016-06-23 267-576 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOYLESTOWN PA
2016-06-23 267-665 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2016-06-23 315-901 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SYRACUSE NY
2016-06-23 323-607 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2016-06-23 323-689 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 08 CA
2016-06-23 337-703 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2016-06-23 405-451 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F WELLSTON OK
2016-06-23 480-486 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2016-06-23 540-390 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F HARTWOOD VA
2016-06-23 606-552 0–9 XXXall 10 · 3 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C PIKEVILLE KY
2016-06-23 606-745 5XXX9XXX · 2 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 ALBANY KY
2016-06-23 612-772 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-06-23 651-802 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-06-23 712-430 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MALVERN IA
2016-06-23 719-394 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D COLORDOSPG CO
2016-06-23 763-760 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-06-23 803-904 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2016-06-23 808-765 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HILO HI
2016-06-23 862-904 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F LITTLE FLS NJ
2016-06-23 864-913 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SPARTANBG SC
2016-06-23 909-870 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C UPLAND CA
2016-06-23 970-546 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F DELTA CO
2016-06-23 970-832 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F CARBONDALE CO
2016-06-23 971-757 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ST HELENS OR
2016-06-23 980-495 0–9 XXXall 10 · 7 holders which blocks → COMPORIUM, INC.- NC 749H CHARLOTTE NC
2016-06-23 980-595 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CHERRYVL NC
2016-06-22 234-757 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F ALLIANCE OH
2016-06-22 236-777 not yet reported which blocks → Fido Solutions Inc. 5643 Vancouver —
2016-06-22 405-925 0XXX1XXX2XXX3XXX4XXX9XXX · 2 holders which blocks → ONVOY, LLC - OK 409F SPENCER OK
2016-06-22 407-604 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E OVIEDO FL
2016-06-22 417-709 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-06-22 431-801 not yet reported which blocks → Iristel Inc. 154E Winnipeg —
2016-06-22 470-332 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2016-06-22 470-488 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2016-06-22 502-735 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GEORGETOWN KY
2016-06-22 531-220 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E LINCOLN NE
2016-06-22 561-781 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2016-06-22 581-477 not yet reported which blocks → ISP Telecom Inc. 4727 Levis —
2016-06-22 609-808 0–9 XXXall 10 · 5 holders which blocks → BARR TELL USA, INC. - NJ 917G ATLNTIC CY NJ
2016-06-22 707-308 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ROSA CA
2016-06-22 716-317 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E CLARENCCTR NY
2016-06-22 778-794 not yet reported which blocks → TELUS Mobility 8301 Stewart —
2016-06-22 778-798 not yet reported which blocks → Fido Solutions Inc. 5643 Vancouver —
2016-06-22 825-323 not yet reported which blocks → Distributel 081E Anzac —
2016-06-22 825-324 not yet reported which blocks → Distributel 081E Conklin —
2016-06-22 825-325 not yet reported which blocks → Distributel 081E Fort Chipewyan —
2016-06-22 825-326 not yet reported which blocks → Distributel 081E Fort Mackay —
2016-06-22 848-757 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F ATLATCHLDS NJ
2016-06-22 917-810 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN07 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.