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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2003-10-28 801-454 0–9 XXXwhole prefix which blocks → FIRSTDIGITAL TELECOM, LLC - UT 5727 MIDVALE UT
2003-10-28 801-460 0–9 XXXwhole prefix which blocks → FIRSTDIGITAL TELECOM, LLC - UT 5727 MIDVALE UT
2003-10-28 801-665 0–9 XXXwhole prefix which blocks → FIRSTDIGITAL TELECOM, LLC - UT 5727 SALT LAKE UT
2003-10-28 801-672 0–9 XXXwhole prefix which blocks → FIRSTDIGITAL TELECOM, LLC - UT 5727 SALT LAKE UT
2003-10-28 801-757 0–9 XXXwhole prefix which blocks → FIRSTDIGITAL TELECOM, LLC - UT 5727 SALT LAKE UT
2003-10-28 828-400 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WAYNESVL NC
2003-10-28 843-655 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MYRTLE BCH SC
2003-10-27 251-217 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2003-10-27 260-247 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 FORT WAYNE IN
2003-10-27 479-221 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 FORT SMITH AR
2003-10-27 757-747 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J NRFOLKZON2 VA
2003-10-27 804-249 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J RICHMOND VA
2003-10-27 812-590 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 NEW ALBANY IN
2003-10-27 828-200 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGHLANDS NC
2003-10-24 254-523 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 WACO TX
2003-10-24 256-610 0–9 XXXall 10 · 3 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 WEDOWEE AL
2003-10-24 304-712 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 BECKLEY WV
2003-10-24 308-250 not yet reported which blocks → N.E. COLORADO CELLULAR, INC. 6874 SIDNEY NE
2003-10-24 325-201 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ABILENE TX
2003-10-24 352-558 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D WILLISTON FL
2003-10-24 407-557 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CELEBRATN FL
2003-10-24 505-947 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2003-10-24 506-440 not yet reported which blocks → Bell Mobility Aliant 329A Fredericton —
2003-10-24 506-530 not yet reported which blocks → Bell Mobility Aliant 329A Shediac —
2003-10-24 709-450 not yet reported which blocks → Bell Mobility Aliant 329A St. Anthony —
2003-10-24 709-668 not yet reported which blocks → Bell Mobility Aliant 329A Springdale —
2003-10-24 785-212 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 LINDSBORG KS
2003-10-24 806-283 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LUBBOCK TX
2003-10-24 806-290 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AMARILLO TX
2003-10-24 806-308 not yet reported which blocks → VEXUS 4913 WOODROW TX
2003-10-24 859-474 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 TELECOM OF KENTUCKY, LLC - KY 7260 ALEXANDRIA KY
2003-10-24 915-307 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EL PASO TX
2003-10-24 940-232 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WICHITAFLS TX
2003-10-24 951-837 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MURRIETA CA
2003-10-23 239-377 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J NO NAPLES FL
2003-10-23 386-338 0–9 XXXall 10 · 6 holders which blocks → AT&T - LOCAL 7421 FLAGLERBCH FL
2003-10-23 403-361 not yet reported which blocks → TELUS 8084 Strathmore —
2003-10-23 403-636 not yet reported which blocks → TELUS 8084 Sundre —
2003-10-23 418-282 not yet reported which blocks → TELUS Mobility 8303 Baie-Comeau (Hauterive) —
2003-10-23 478-233 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 GORDON GA
2003-10-23 478-234 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 LKSINCLAIR GA
2003-10-23 478-235 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 MARSHALLVL GA
2003-10-23 506-878 not yet reported which blocks → Aliant Telecom(NB) 8090 Moncton —
2003-10-22 419-709 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2003-10-22 514-225 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Montreal —
2003-10-22 678-622 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 GAINESVL GA
2003-10-22 989-804 3XXX which blocks → WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 0127 SHEPHERD MI
2003-10-21 207-340 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 KINGFIELD ME
2003-10-21 214-399 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 WAXAHACHIE TX
2003-10-21 281-237 0–9 XXXwhole prefix which blocks → CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 2109 KATY TX

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.