Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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
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
2016-06-21 224-754 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 HIGHLANDPK IL
2016-06-21 667-321 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 PRINCEFRCK MD
2016-06-21 754-757 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E DEERFLDBCH FL
2016-06-21 816-647 0–9 XXXall 10 · 4 holders which blocks → SOUTHWESTERN BELL 9533 KANSASCITY MO
2016-06-21 857-760 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E WATERTOWN MA
2016-06-21 860-500 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 HARTFORD CT
2016-06-21 860-600 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CT 199F LITCHFIELD CT
2016-06-20 205-858 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F COLUMBIANA AL
2016-06-20 236-294 not yet reported which blocks → Navigata Communications Limited 078G D'Arcy —
2016-06-20 236-295 not yet reported which blocks → Navigata Communications Limited 078G Gold Bridge —
2016-06-20 236-296 not yet reported which blocks → Navigata Communications Limited 078G Pemberton —
2016-06-20 236-297 not yet reported which blocks → Navigata Communications Limited 078G Shalalth —
2016-06-20 267-785 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-06-20 312-824 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2016-06-20 336-807 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2016-06-20 470-316 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2016-06-20 470-484 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2016-06-20 515-715 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2016-06-20 901-667 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 WESTWHITEV TN
2016-06-17 226-728 not yet reported which blocks → Hay Communications Co-operative ltd. 972G Centralia —
2016-06-17 312-826 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2016-06-17 323-705 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 02 CA
2016-06-17 365-205 not yet reported which blocks → Distributel 082E Waterdown —
2016-06-17 405-467 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F YUKON OK
2016-06-17 405-937 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OK 409F STILLWATER OK
2016-06-17 470-306 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NE GA
2016-06-17 530-806 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDDING CA
2016-06-17 639-936 not yet reported which blocks → Access Communications Co-operative Limited 280H Yellow Grass —
2016-06-17 657-335 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SANTA ANA CA
2016-06-17 657-337 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C CYPRESS CA
2016-06-17 762-225 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WAYNESBORO GA
2016-06-17 774-608 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PLYMOUTH MA
2016-06-17 775-300 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 RENO NV
2016-06-17 805-514 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E FILLMORE CA
2016-06-17 808-773 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
2016-06-17 825-697 not yet reported which blocks → Distributel 081E Bow Island —
2016-06-17 825-698 not yet reported which blocks → Distributel 081E Burdett —
2016-06-17 825-699 not yet reported which blocks → Distributel 081E Elkwater —
2016-06-17 825-700 not yet reported which blocks → Distributel 081E Hilda —
2016-06-17 825-701 not yet reported which blocks → Distributel 081E Irvine —
2016-06-17 825-702 not yet reported which blocks → Distributel 081E Ralston —
2016-06-17 825-703 not yet reported which blocks → Distributel 081E Schuler —
2016-06-17 825-704 not yet reported which blocks → Distributel 081E Seven Persons —
2016-06-17 825-705 not yet reported which blocks → Distributel 081E Walsh —
2016-06-17 909-490 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ONTARIO CA
2016-06-17 913-295 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 KANSASCITY KS
2016-06-17 914-817 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 MOUNTKISCO NY
2016-06-17 929-360 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
2016-06-17 929-370 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2016-06-16 469-986 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CARROLLTON TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.