NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2004-02-12 316-223 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 WICHITA KS
2004-02-12 418-781 not yet reported which blocks → TELUS Quebec 2243 Quebec —
2004-02-12 435-202 not yet reported which blocks → UNION TELEPHONE COMPANY 013B LOGAN UT
2004-02-12 514-372 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2004-02-12 514-379 not yet reported which blocks → Videotron Ltd. 8306 Montreal —
2004-02-12 780-235 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2004-02-12 859-201 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2004-02-12 860-218 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J HARTFORD CT
2004-02-09 812-399 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GEORGETOWN IN
2004-02-09 812-406 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTN IN
2004-02-09 856-203 0–9 XXXall 10 · 4 holders which blocks → MONMOUTH TELEPHONE AND TELEGRAPH, INC. - NJ 3639 CAMDEN NJ
2004-02-08 225-208 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2004-02-08 812-252 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HENRYVILLE IN
2004-02-08 850-777 0–9 XXXall 10 · 4 holders which blocks → MCC TELEPHONY LLC 593K PENSACOLA FL
2004-02-07 309-202 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PEKIN IL
2004-02-06 219-233 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → FBN INDIANA, INC. - IN 4117 GOODLAND IN
2004-02-06 219-234 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → FBN INDIANA, INC. - IN 4117 KENTLAND IN
2004-02-06 219-235 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FBN INDIANA, INC. - IN 4117 BROOK IN
2004-02-06 219-236 not yet reported which blocks → FBN INDIANA, INC. - IN 4117 WOLCOTT IN
2004-02-06 260-259 not yet reported which blocks → FBN INDIANA, INC. - IN 4117 SHIPSHEWNA IN
2004-02-06 308-293 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 KEARNEY NE
2004-02-06 352-200 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WEEKICHSPG FL
2004-02-06 352-201 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 INVERNESS FL
2004-02-06 567-230 1XXX5XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TIFFIN OH
2004-02-06 574-308 not yet reported which blocks → FBN INDIANA, INC. - IN 4117 NEWCARLISL IN
2004-02-06 574-324 not yet reported which blocks → FBN INDIANA, INC. - IN 4117 NO LIBERTY IN
2004-02-06 574-362 not yet reported which blocks → FBN INDIANA, INC. - IN 4117 MILLERSBG IN
2004-02-06 803-308 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ORANGEBURG SC
2004-02-06 805-944 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LOMPOC CA
2004-02-06 850-238 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PNAMACYBCH FL
2004-02-06 850-242 0XXX7XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENVILLE FL
2004-02-06 910-260 3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 CLINTON NC
2004-02-06 910-985 3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LILLINGTON NC
2004-02-06 973-201 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F WHIPPANY NJ
2004-02-06 973-215 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F WHIPPANY NJ
2004-02-05 250-739 not yet reported which blocks → TELUS 8086 Nanaimo —
2004-02-05 269-202 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J COLOMA MI
2004-02-05 269-203 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J RICHLAND MI
2004-02-05 269-204 0–9 XXXall 10 · 9 holders which blocks → PAETEC ITEL, LLC 829J PLAINWELL MI
2004-02-05 269-205 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J MIDDLEVL MI
2004-02-05 316-221 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 WICHITA KS
2004-02-05 479-217 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 MULBERRY AR
2004-02-05 514-787 not yet reported which blocks → TELUS Quebec 2243 Montreal —
2004-02-05 601-773 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 ROXIE MS
2004-02-05 601-779 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 WOODVILLE MS
2004-02-05 601-791 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 LUCEDALE MS
2004-02-05 616-200 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J TRUFANT MI
2004-02-05 620-202 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 RIVERTON KS
2004-02-05 701-210 1XXX3XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 6568 OAKES ND
2004-02-05 701-330 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 6568 GRANDFORKS ND

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.