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
— 412-929 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON7 PA
— 412-931 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-932 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J PTTSBGZON1 PA
— 412-937 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON7 PA
— 412-939 1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON2 PA
— 412-942 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTTSBGZON6 PA
— 412-943 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN11 PA
— 412-945 0XXX1XXX3XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CLAIRTON PA
— 412-946 0XXX2XXX3XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - PA 547E ELIZABETH PA
— 412-948 4XXX5XXX6XXX7XXX · 3 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 8597 PTGSBNZN10 PA
— 412-949 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON7 PA
— 412-950 not yet reported which blocks → PA
— 412-951 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-952 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-953 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-954 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTTSBGZON8 PA
— 412-955 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON2 PA
— 412-956 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-958 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON7 PA
— 412-959 not yet reported which blocks → PA
— 412-960 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON7 PA
— 412-961 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTTSBGZON3 PA
— 412-963 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN19 PA
— 412-965 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-967 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN19 PA
— 412-968 6XXX7XXX8XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PTGSBNZN19 PA
— 412-970 not yet reported which blocks → SPOK, INC. 6630 PTTSBGZON6 PA
— 412-972 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ROCHESTER PA
— 412-973 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-974 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ROCHESTER PA
— 412-976 not yet reported which blocks → PA
— 412-977 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-978 not yet reported which blocks → SPOK, INC. 6630 PTGSBNZN14 PA
— 412-979 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-980 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-985 not yet reported which blocks → PA
— 412-989 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 XXXXXXXXXX PA
— 412-992 0XXX1XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
— 412-994 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WASHINGTON PA
— 412-995 0XXX8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 PTTSBGZON1 PA
— 412-996 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 412-997 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WASHINGTON PA
— 412-998 0XXX1XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN13 PA
— 412-999 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PTTSBGZON1 PA
— 413-201 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 413-202 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 XXXXXXXXXX MA
— 413-204 not yet reported which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 SPRINGFLD MA
— 413-205 4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 SPRINGFLD MA
— 413-208 not yet reported which blocks → PAETEC ITEL, LLC 829J SO DEERFLD MA
— 413-210 4XXX which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLYOKE MA

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.