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
2002-03-14 914-374 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN04 NY
2002-03-14 917-698 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN08 NY
2002-03-14 985-232 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HOUMA LA
2002-03-13 205-418 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J GARDENDALE AL
2002-03-13 205-419 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ALABASTER AL
2002-03-13 318-272 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SHREVEPORT LA
2002-03-13 347-224 3XXX5XXX6XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN05 NY
2002-03-13 419-980 7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DEFIANCE OH
2002-03-13 541-362 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PRINEVILLE OR
2002-03-13 580-609 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ALVA OK
2002-03-13 580-749 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 PONCA CITY OK
2002-03-13 580-789 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 BLACKWELL OK
2002-03-13 608-434 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 BARABOO WI
2002-03-13 636-524 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 FSSCRSTLCY MO
2002-03-13 704-659 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J HUNTERSVL NC
2002-03-13 704-675 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GASTONIA NC
2002-03-13 708-717 7XXX which blocks → T-MOBILE USA, INC. 6529 ORLAND IL
2002-03-13 720-558 not yet reported which blocks → QWEST CORPORATION 9636 DENVER CO
2002-03-13 727-246 not yet reported which blocks → PAETEC ITEL, LLC 829J NWPTRICHEY FL
2002-03-13 765-276 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GREENCASTL IN
2002-03-13 770-374 not yet reported which blocks → METROPCS, INC. 5562 GAINESVL GA
2002-03-13 813-346 not yet reported which blocks → PAETEC ITEL, LLC 829J TAMPANTH FL
2002-03-13 830-220 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARBLE FLS TX
2002-03-13 830-431 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOERNE TX
2002-03-13 830-554 1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLANCO TX
2002-03-13 831-705 0–9 XXXall 10 · 7 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHUALAR CA
2002-03-13 847-208 not yet reported which blocks → T-MOBILE USA, INC. 6529 NORTHBROOK IL
2002-03-13 856-366 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J CAMDEN NJ
2002-03-13 865-235 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2002-03-13 870-627 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 JONESBORO AR
2002-03-13 903-246 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 COMMERCE TX
2002-03-13 913-940 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANSASCITY KS
2002-03-13 914-498 6XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WSCHSTZN08 NY
2002-03-13 970-797 2XXX3XXX4XXX5XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FT COLLINS CO
2002-03-12 248-856 5XXX8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 AUBURN HTS MI
2002-03-12 248-880 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2002-03-12 248-974 0XXX1XXX2XXX3XXX4XXX · 2 holders which blocks → METROPCS, INC. 5562 NORTHVILLE MI
2002-03-12 248-990 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROYAL OAK MI
2002-03-12 253-336 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 DES MOINES WA
2002-03-12 289-439 not yet reported which blocks → Bell Mobility 6574 Hamilton —
2002-03-12 401-413 none assigned yet which blocks → METROPCS, INC. 5562 PROVIDENCE RI
2002-03-12 418-955 not yet reported which blocks → Bell Mobility 6574 Quebec —
2002-03-12 504-329 4XXX5XXX8XXX9XXX which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2002-03-12 508-551 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
2002-03-12 514-778 not yet reported which blocks → Bell Mobility 6574 Montreal —
2002-03-12 519-718 not yet reported which blocks → Bell Mobility 6574 Simcoe —
2002-03-12 571-258 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON VIRGINIA, INC. 9213 LEESBURG VA
2002-03-12 571-339 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ENGLESIDE VA
2002-03-12 608-649 not yet reported which blocks → TECH COM, INC. - WI 2556 RICHLD CTR WI
2002-03-12 613-213 not yet reported which blocks → Bell Mobility 6574 Brockville —

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.