NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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, last 30 days — NPA 216
ONVOY, LLC - OH 3
HD CARRIER LLC 3
TELEPORT COMMUNICATIONS AMERICA, LLC - OH 1
INTRADO COMMUNICATIONS, LLC 1
AHOI LLC 1
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-04-13 216-342-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K TERRACE OH
2005-04-07 216-255-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2005-02-17 216-503-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 INDEPNDNCE OH
2005-02-17 216-503-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 INDEPNDNCE OH
2005-02-15 216-255-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2005-02-03 216-539-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2005-01-27 216-539-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2005-01-27 216-539-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2005-01-26 216-325-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2005-01-26 216-394-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2005-01-26 216-539-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2005-01-26 216-539-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2005-01-24 216-220-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MONTRSE OH
2004-12-16 216-245-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TERRACE OH
2004-11-11 216-799-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-11-10 216-394-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-10-28 216-394-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-10-28 216-394-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-10-18 216-258-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-09-16 216-799-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C CLEVELAND OH
2004-09-09 216-286-0XXX 0000–0999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-1XXX 1000–1999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-2XXX 2000–2999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-3XXX 3000–3999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-4XXX 4000–4999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-5XXX 5000–5999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-6XXX 6000–6999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-7XXX 7000–7999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-8XXX 8000–8999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-09-09 216-286-9XXX 9000–9999Assigned OHIO BELL TEL CO 9321 CLEVELAND OH
2004-08-18 216-539-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2004-08-18 216-925-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2004-08-18 216-925-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2004-07-16 216-258-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2004-07-16 216-258-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2004-07-16 216-325-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-07-16 216-325-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-07-06 216-258-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEVELAND OH
2004-06-10 216-510-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K MONTRSE OH
2004-06-03 216-264-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K INDEPNDNCE OH
2004-05-24 216-258-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-04-21 216-255-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-03-24 216-201-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CLEVELAND OH
2004-02-23 216-255-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-02-04 216-255-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-02-04 216-255-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2004-01-19 216-526-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2003-12-30 216-503-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J INDEPNDNCE OH
2003-12-26 216-438-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MONTRSE OH
2003-12-26 216-450-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J TERRACE OH

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.