NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2010-02-08 785-502 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → IDEATEK TELCOM, LLC - KS 014E SALINA KS
2010-02-05 480-331 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2010-02-05 609-480 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 PRINCETON NJ
2010-02-05 647-847 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2010-02-05 778-730 not yet reported which blocks → Distributel 081E Port Coquitlam —
2010-02-05 778-731 not yet reported which blocks → Distributel 081E Port Moody —
2010-02-05 778-732 not yet reported which blocks → Distributel 081E Richmond —
2010-02-05 778-733 not yet reported which blocks → Distributel 081E Squamish —
2010-02-05 778-734 not yet reported which blocks → Distributel 081E West Vancouver —
2010-02-05 778-735 not yet reported which blocks → Distributel 081E Whalley —
2010-02-05 778-736 not yet reported which blocks → Distributel 081E White Rock —
2010-02-05 910-621 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 PINEHURST NC
2010-02-04 202-717 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN1 DC
2010-02-04 269-363 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTON HBR MI
2010-02-04 330-800 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J AKRON OH
2010-02-04 512-368 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2010-02-04 574-349 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GOSHEN IN
2010-02-04 720-885 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2010-02-03 304-490 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LOST RIVER WV
2010-02-03 403-907 not yet reported which blocks → Distributel 081E Cochrane —
2010-02-03 403-908 not yet reported which blocks → Distributel 081E High River —
2010-02-03 573-664 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MO
2010-02-03 575-224 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 TAOS NM
2010-02-03 575-383 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - NM 206F RATON NM
2010-02-03 671-989 not yet reported which blocks → DOCOMO PACIFIC, INC. 897F AGANA GU
2010-02-03 778-724 not yet reported which blocks → Distributel 081E Vancouver —
2010-02-03 778-726 not yet reported which blocks → Distributel 081E Langley —
2010-02-03 778-727 not yet reported which blocks → Distributel 081E New Westminster —
2010-02-03 778-728 not yet reported which blocks → Distributel 081E Newton —
2010-02-03 778-729 not yet reported which blocks → Distributel 081E North Vancouver —
2010-02-03 786-453 0–9 XXXall 10 · 4 holders which blocks → IDT AMERICA CORP. - FL 765A MIAMI FL
2010-02-03 818-855 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VAN NUYS CA
2010-02-03 843-730 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2010-02-03 904-500 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J JACKSONVL FL
2010-02-03 913-951 0–9 XXXall 10 · 5 holders which blocks → EVERFAST FIBER NETWORKS LLC 3915 KANSASCITY KS
2010-02-03 989-418 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CLARE MI
2010-02-02 330-888 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 TWINSBURG OH
2010-02-02 347-847 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 NWYRCYZN03 NY
2010-02-02 403-814 not yet reported which blocks → Distributel 081E Strathmore —
2010-02-02 403-917 not yet reported which blocks → Distributel 081E Okotoks —
2010-02-02 440-420 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ELYRIA OH
2010-02-02 506-262 not yet reported which blocks → TELUS Mobility 8303 Fredericton —
2010-02-02 581-740 not yet reported which blocks → Videotron Ltd. 8306 Donnacona —
2010-02-01 262-329 0–9 XXXwhole prefix which blocks → WISCONSIN BELL INC 9327 CEDARBURG WI
2010-02-01 318-538 0–9 XXXall 10 · 3 holders which blocks → HUNT TELECOMMUNICATIONS, LLC - LA 181D MONROE LA
2010-02-01 862-888 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 PASSAIC NJ
2010-02-01 939-332 0–9 XXXall 10 · 2 holders which blocks → LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2010-01-29 229-288 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ALBANY GA
2010-01-29 403-768 not yet reported which blocks → Distributel 081E Airdrie —
2010-01-29 403-778 not yet reported which blocks → Distributel 081E Banff —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.