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
2021-09-10 838-433 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J ALBANY NY
2021-09-10 839-399 0–9 XXXall 10 · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J COLUMBIA SC
2021-09-10 854-455 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J FLORENCE SC
2021-09-10 854-588 0–9 XXXall 10 · 6 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J MYRTLE BCH SC
2021-09-10 854-844 0–9 XXXall 10 · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CHARLESTON SC
2021-09-10 857-387 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J QUINCY MA
2021-09-10 872-288 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CHICGOZN01 IL
2021-09-10 934-216 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2021-09-10 934-217 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2021-09-10 934-218 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BABYLON NY
2021-09-10 934-219 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BELLPORT NY
2021-09-10 939-316 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-10 939-320 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 216-427 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2021-09-09 223-299 0–9 XXXall 10 · 7 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J YORK PA
2021-09-09 223-488 0–9 XXXall 10 · 3 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J HARISBGZN1 PA
2021-09-09 223-533 0–9 XXXall 10 · 5 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CARLISLE PA
2021-09-09 223-733 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CHAMBERSBG PA
2021-09-09 303-943 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J DENVER CO
2021-09-09 321-365 0–9 XXXall 10 · 2 holders which blocks → METROPCS NETWORKS, LLC 899D COCOA FL
2021-09-09 367-883 not yet reported which blocks → Fibernetics Corporation 464D Charny —
2021-09-09 367-884 not yet reported which blocks → Fibernetics Corporation 464D Levis —
2021-09-09 367-885 not yet reported which blocks → Fibernetics Corporation 464D St-Nicolas —
2021-09-09 386-298 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 FLAGLERBCH FL
2021-09-09 475-309 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2021-09-09 478-351 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E MILLEN GA
2021-09-09 484-871 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LEHIGHTON PA
2021-09-09 506-723 not yet reported which blocks → Iristel Inc. 154E Shediac —
2021-09-09 513-902 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H CLERMONT OH
2021-09-09 540-756 1XXX2XXX5XXX6XXX7XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J MADISON VA
2021-09-09 540-770 0XXX1XXX8XXX9XXX · 2 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G HARRISONBG VA
2021-09-09 551-328 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 JERSEYCITY NJ
2021-09-09 579-893 not yet reported which blocks → Fibernetics Corporation 464D St-Hyacinthe —
2021-09-09 579-894 not yet reported which blocks → Fibernetics Corporation 464D St-Damase —
2021-09-09 579-895 not yet reported which blocks → Fibernetics Corporation 464D Ste-Madeleine —
2021-09-09 579-896 not yet reported which blocks → Fibernetics Corporation 464D St-Pie —
2021-09-09 579-897 not yet reported which blocks → Fibernetics Corporation 464D Actonvale —
2021-09-09 603-441 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J ROCHESTER NH
2021-09-09 612-699 0–9 XXXall 10 · 3 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J TWINCITIES MN
2021-09-09 640-696 0–9 XXXall 10 · 3 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J ATLNTIC CY NJ
2021-09-09 680-877 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J SYRACUSE NY
2021-09-09 681-305 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 BECKLEY WV
2021-09-09 681-465 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ELKINS WV
2021-09-09 681-544 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CHARLES TN WV
2021-09-09 681-733 0–9 XXXall 10 · 3 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J PRKRSBGZN1 WV
2021-09-09 681-833 0–9 XXXall 10 · 5 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J CHRLSTNZN1 WV
2021-09-09 681-877 7XXX8XXX9XXX · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J BLUEFIELD WV
2021-09-09 681-880 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J WHELNGZON1 WV
2021-09-09 737-298 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LEANDER TX
2021-09-09 743-214 0–9 XXXall 10 · 5 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC

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.