NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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, all time — NPA 781
VERIZON NEW ENGLAND INC. 232
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 92
PAETEC ITEL, LLC 69
LEVEL 3 COMMUNICATIONS, LLC - MA 59
TC SYSTEMS, INC. 57
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
— 781-940 not yet reported which blocks → MA
— 781-941 0XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 SAUGUS MA
— 781-942 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 READING MA
— 781-943 0XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TC SYSTEMS, INC. 7135 WELLESLEY MA
— 781-944 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 READING MA
— 781-945 none assigned yet which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E LEXINGTON MA
— 781-948 0XXX8XXX · 2 holders which blocks → XO MASSACHUSETS, INC. 4536 NORWOOD MA
— 781-949 5XXX6XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORWOOD MA
— 781-950 not yet reported which blocks → MA
— 781-951 1XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - MA 892D REVERE MA
— 781-952 0XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → TC SYSTEMS, INC. 7135 BRAINTREE MA
— 781-953 none assigned yet which blocks → METROPCS, INC. 5562 REVERE MA
— 781-954 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F STONEHAM MA
— 781-956 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORWOOD MA
— 781-957 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J MEDFORD MA
— 781-958 none assigned yet which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E LEXINGTON MA
— 781-959 not yet reported which blocks → MA
— 781-960 3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MEDFORD MA
— 781-961 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 RANDOLPH MA
— 781-962 2XXX which blocks → METROPCS, INC. 5562 WOBURN MA
— 781-963 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 RANDOLPH MA
— 781-964 none assigned yet which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BRAINTREE MA
— 781-965 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 NEEDHAM MA
— 781-966 not yet reported which blocks → PAETEC ITEL, LLC 829J WALTHAM MA
— 781-968 2XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WAKEFIELD MA
— 781-969 not yet reported which blocks → MA
— 781-970 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WOBURN MA
— 781-972 none assigned yet which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEEDHAM MA
— 781-976 not yet reported which blocks → MA
— 781-977 0XXX1XXX3XXX5XXX7XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WINCHESTER MA
— 781-979 8XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 MELROSE MA
— 781-981 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 LEXINGTON MA
— 781-982 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 ROCKLAND MA
— 781-983 8XXX which blocks → METROPCS, INC. 5562 WINCHESTER MA
— 781-985 2XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WEYMOUTH MA
— 781-986 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 RANDOLPH MA
— 781-987 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J NORWELL MA
— 781-989 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CANTON MA
— 781-990 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J MARBLEHEAD MA
— 781-993 none assigned yet which blocks → VERIZON NEW ENGLAND INC. 9102 BURLINGTON MA
— 781-994 none assigned yet which blocks → TC SYSTEMS, INC. 7135 WOBURN MA
— 781-996 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 WALTHAM MA
— 781-997 7XXX8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WELLESLEY MA
— 781-998 none assigned yet which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BURLINGTON MA
— 781-999 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 LEXINGTON MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.