NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 248
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 520
NEW CINGULAR WIRELESS PCS, LLC - IL 384
ONVOY, LLCV - MI 332
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 287
METROPCS, INC. 227
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-01-24 248-331-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHFIELD MI
2014-01-15 248-826-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2014-01-15 248-826-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2014-01-09 248-385-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2014-01-09 248-385-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2014-01-08 248-385-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BIRMINGHAM MI
2014-01-07 248-831-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2014-01-07 248-831-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2014-01-07 248-831-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ORTONVILLE MI
2014-01-06 248-216-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2014-01-06 248-216-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2014-01-06 248-216-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MILFDWH LK MI
2013-12-26 248-385-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2013-12-26 248-385-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2013-12-26 248-385-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2013-12-19 248-260-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 AUBURN HTS MI
2013-12-17 248-939-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FARMINGTON MI
2013-12-12 248-378-0XXX 0000–0999Assigned METROPCS, INC. 5562 NORTHVILLE MI
2013-12-10 248-215-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G HOLLY MI
2013-12-10 248-216-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G MILFDWH LK MI
2013-12-10 248-268-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ROYAL OAK MI
2013-12-10 248-278-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G SOUTH LYON MI
2013-12-10 248-301-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G COMMERCE MI
2013-12-10 248-308-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G NORTHVILLE MI
2013-12-10 248-309-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G PONTIAC MI
2013-12-10 248-406-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G W BLOOMFLD MI
2013-12-10 248-460-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G OXFORD MI
2013-12-10 248-831-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ORTONVILLE MI
2013-12-10 248-859-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G WALLEDLAKE MI
2013-12-10 248-923-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ROCHESTER MI
2013-12-10 248-929-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G LAKE ORION MI
2013-12-06 248-309-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2013-12-02 248-296-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2013-11-27 248-973-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J W BLOOMFLD MI
2013-11-14 248-301-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J COMMERCE MI
2013-11-08 248-309-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PONTIAC MI
2013-11-04 248-893-6XXX 6000–6999Assigned BHN IP ENABLED SERVICES, LLC 045L FARMINGTON MI
2013-11-01 248-297-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CLARKSTON MI
2013-10-30 248-234-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SOUTHFIELD MI
2013-10-30 248-957-9XXX 9000–9999Assigned BHN IP ENABLED SERVICES, LLC 045L FARMINGTON MI
2013-10-24 248-463-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2013-10-24 248-971-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BIRMINGHAM MI
2013-10-21 248-268-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ROYAL OAK MI
2013-10-21 248-294-2XXX 2000–2999Assigned TELNET WORLDWIDE, INC. 817J PONTIAC MI
2013-10-21 248-294-3XXX 3000–3999Assigned TELNET WORLDWIDE, INC. 817J PONTIAC MI
2013-10-21 248-294-6XXX 6000–6999Assigned TELNET WORLDWIDE, INC. 817J PONTIAC MI
2013-10-04 248-294-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2013-10-04 248-294-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2013-10-04 248-309-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2013-10-04 248-309-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.