NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2017-07-10 657-310 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2017-07-10 778-756 not yet reported which blocks → TELUS 8086 Newton —
2017-07-10 808-794 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HONOLULU HI
2017-07-10 825-200 not yet reported which blocks → TELUS 8084 Edmonton —
2017-07-07 219-244 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 LAKE STA IN
2017-07-07 312-481 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 CHICGOZN01 IL
2017-07-07 385-377 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 SALT LAKE UT
2017-07-07 405-704 0–9 XXXall 10 · 4 holders which blocks → VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW 1165 TECUMSEH OK
2017-07-07 412-883 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN14 PA
2017-07-07 470-490 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 CARTERSVL GA
2017-07-07 470-717 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2017-07-07 612-271 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2017-07-07 717-990 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANDISVL PA
2017-07-06 210-686 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D SANANTONIO TX
2017-07-06 405-927 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW 1165 PRAGUE OK
2017-07-06 423-397 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F BENTON TN
2017-07-06 440-514 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHAGRINFLS OH
2017-07-06 580-459 0XXX9XXX · 2 holders which blocks → WINDSTREAM OKLAHOMA, INC. 1965 MILBURN OK
2017-07-06 608-510 0XXX1XXX3XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRATIOT WI
2017-07-06 737-220 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D AUSTIN TX
2017-07-06 785-369 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E SENECA KS
2017-07-06 862-867 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H NEWARK NJ
2017-07-06 971-291 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2017-07-05 240-563 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MD 876D WSHNGTNZN5 MD
2017-07-05 440-640 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C TRINITY OH
2017-07-05 580-809 0XXX7XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM OKLAHOMA, INC. 1965 SMITHVILLE OK
2017-07-05 603-288 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D NASHUA NH
2017-07-05 647-916 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-07-05 702-780 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D LAS VEGAS NV
2017-07-03 310-682 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 HAWTHORNE CA
2017-07-03 314-347 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2017-07-03 315-260 0–9 XXXall 10 · 6 holders which blocks → WINDSTREAM NEW YORK, INC. - FULTON 0106 MUNNSVILLE NY
2017-07-03 315-907 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D SYRACUSE NY
2017-07-03 352-451 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D GAINESVL FL
2017-07-03 417-346 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E NEOSHO MO
2017-07-03 573-524 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E MACKSCREEK MO
2017-07-03 929-457 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN06 NY
2017-06-30 315-978 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CENTRAL SQ NY
2017-06-30 334-661 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 DOTHAN AL
2017-06-30 424-404 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REDONDO CA
2017-06-30 540-403 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → AIRUS, INC. - VA 726H CULPEPER VA
2017-06-30 540-926 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - VA 726H ROANOKE VA
2017-06-30 561-365 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J WPALMBEACH FL
2017-06-30 564-397 0–9 XXXall 10 · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-06-30 661-409 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D PLDL PLDL CA
2017-06-30 661-417 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D SNCA NHCS CA
2017-06-30 719-675 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 COLORDOSPG CO
2017-06-30 720-594 0–9 XXXall 10 · 3 holders which blocks → AIRUS, INC. - CO 019J DENVER CO
2017-06-30 765-290 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ROSEDALE IN
2017-06-30 804-401 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - VA 726H RICHMOND VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.