NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2020-04-16 980-890 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E CHARLOTTE NC
2020-04-15 213-518 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 07 CA
2020-04-15 236-446 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2020-04-15 470-576 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2020-04-15 470-603 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2020-04-15 928-361 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PIMA AZ
2020-04-15 929-521 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN08 NY
2020-04-15 970-740 0–9 XXXall 10 · 6 holders which blocks → QWEST CORPORATION 9636 STERLING CO
2020-04-14 681-540 0XXX1XXX4XXX6XXX8XXX · 3 holders which blocks → ONVOY, LLC - WV 449F HARPESFRRY WV
2020-04-14 715-328 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K DOWNSVILLE WI
2020-04-14 804-581 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F SALUDA VA
2020-04-14 916-699 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2020-04-13 234-270 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F UNIONTOWN OH
2020-04-13 267-807 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J PHLDLPHZN1 PA
2020-04-13 269-529 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H KALAMAZOO MI
2020-04-13 272-229 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CHAPMAN LK PA
2020-04-13 608-686 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C PORTAGE WI
2020-04-13 657-434 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-04-10 213-523 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 07 CA
2020-04-10 331-266 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST CHARLES IL
2020-04-10 361-263 0–9 XXXall 10 · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 ALICE TX
2020-04-10 667-299 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J ANNAPOLIS MD
2020-04-10 667-399 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → HD CARRIER LLC 321J UNION BDG MD
2020-04-10 949-894 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C SADLBK VLY CA
2020-04-09 216-327 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2020-04-09 236-763 not yet reported which blocks → TELUS 8086 Kelowna —
2020-04-09 332-322 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2020-04-09 431-470 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2020-04-09 440-656 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STRONGSVL OH
2020-04-09 540-780 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - VA 138E MT GILEAD VA
2020-04-09 540-781 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - VA 138E BLUEMONT VA
2020-04-09 571-467 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F WSNGTNZN08 VA
2020-04-09 682-327 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEATHERFD TX
2020-04-09 763-343 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-04-09 856-746 0XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → HD CARRIER LLC 321J MULLICA HL NJ
2020-04-09 952-520 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-04-09 972-654 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRISCO TX
2020-04-08 236-486 not yet reported which blocks → TELUS 8086 Cranbrook —
2020-04-08 431-482 not yet reported which blocks → TELUS Integrated Communications 2782 Winnipeg —
2020-04-08 469-824 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 ALLEN TX
2020-04-08 479-384 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT SMITH AR
2020-04-08 501-418 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2020-04-08 571-460 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN19 VA
2020-04-08 603-451 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CONCORD NH
2020-04-08 618-373 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2020-04-08 689-300 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SANFORD FL
2020-04-08 689-500 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ORLANDO FL
2020-04-08 803-558 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ROCK HILL SC
2020-04-08 806-710 0XXX1XXX2XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DUMAS TX
2020-04-08 909-791 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ARROWHEAD CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.