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
2012-12-07 608-618 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F EDGERTON WI
2012-12-07 705-420 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Sault Ste. Marie —
2012-12-07 772-206 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 PTST LUCIE FL
2012-12-07 819-630 not yet reported which blocks → Videotron Ltd. 8306 Saint-Albert —
2012-12-07 819-641 not yet reported which blocks → Videotron Ltd. 8306 Warwick —
2012-12-07 864-522 0–9 XXXwhole prefix which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2012-12-07 867-375 not yet reported which blocks → Bell Mobility 6574 Aklavik —
2012-12-07 867-376 not yet reported which blocks → Bell Mobility 6574 Fort Resolution —
2012-12-07 867-377 not yet reported which blocks → Bell Mobility 6574 Fort Mcpherson —
2012-12-07 909-328 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2012-12-07 909-351 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E MENTONE CA
2012-12-07 954-715 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 DEERFLDBCH FL
2012-12-07 954-901 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2012-12-06 646-517 0–9 XXXall 10 · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
2012-12-06 646-589 0–9 XXXall 10 · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
2012-12-06 774-502 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WORCESTER MA
2012-12-06 857-301 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2012-12-05 252-631 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NEW BERN NC
2012-12-05 252-751 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K GREENVILLE NC
2012-12-05 252-978 0XXX1XXX4XXX5XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ROCKYMOUNT NC
2012-12-05 331-251 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DOWNERSGRV IL
2012-12-05 786-606 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 MIAMI FL
2012-12-05 910-491 0–9 XXXall 10 · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FAYETTEVL NC
2012-12-05 910-553 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BOLIVIA NC
2012-12-05 910-769 0–9 XXXwhole prefix which blocks → TWC IP ENABLED SERVICES, LLC 793K WILMINGTON NC
2012-12-05 910-939 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K JACKSONVL NC
2012-12-05 980-220 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E LATTIMORE NC
2012-12-04 415-696 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-12-04 646-655 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN01 NY
2012-12-04 707-380 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 UKIAH CA
2012-12-04 813-331 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPASTH FL
2012-12-04 954-256 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E FTLAUDERDL FL
2012-12-03 229-573 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C ALBANY GA
2012-12-03 323-486 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 02 CA
2012-12-03 720-386 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F GEORGETOWN CO
2012-12-03 813-502 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPAEST FL
2012-12-03 971-317 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J BEAVERTON OR
2012-11-30 226-680 not yet reported which blocks → Comwave Networks 160G London —
2012-11-30 318-702 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C COUSHATTA LA
2012-11-30 352-605 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 ORANGE SPG FL
2012-11-30 404-600 0–9 XXXall 10 · 4 holders which blocks → O1 COMMUNICATIONS EAST, LLC - GA 844G ATLANTA GA
2012-11-30 404-710 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-11-30 438-258 not yet reported which blocks → Zayo Canada Inc. 8304 Montreal —
2012-11-30 438-588 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2012-11-30 510-454 0–9 XXXall 10 · 4 holders which blocks → PACIFIC BELL 9740 OKLD TRNID CA
2012-11-30 587-759 not yet reported which blocks → TELUS 8084 Edmonton —
2012-11-30 682-217 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ARLINGTON TX
2012-11-30 786-603 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2012-11-30 819-938 not yet reported which blocks → Zayo Canada Inc. 8304 Ottawa-Hull —
2012-11-30 832-812 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX

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.