NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

28 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 302
NEW CINGULAR WIRELESS PCS, LLC - DC 21
ONVOY, LLC - DE 2
EXIANT COMMUNICATIONS LLC 2
OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 1
BANDWIDTH.COM CLEC, LLC - DE 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2009-05-27 302-232-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E BRIDGEVL DE
2009-05-27 302-272-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E CAMDEN DE
2009-05-27 302-564-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E SELBYVILLE DE
2009-05-27 302-664-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E MILTON DE
2009-05-27 302-725-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E MILFORD DE
2009-05-27 302-732-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E DAGSBORO DE
2009-05-27 302-754-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E GREENWOOD DE
2009-05-27 302-763-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E HOCKESSIN DE
2009-05-27 302-779-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E HARTLY DE
2009-05-27 302-786-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E HARRINGTON DE
2009-05-27 302-827-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E LEWES DE
2009-05-27 302-828-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E MIDDLETOWN DE
2009-05-27 302-829-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E OCEAN VIEW DE
2009-05-27 302-846-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E DELMAR DE
2009-05-27 302-865-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E FREDERICA DE
2009-05-27 302-870-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E FELTON DE
2009-05-27 302-877-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E LAUREL DE
2009-05-27 302-933-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E MILLSBORO DE
2009-05-27 302-966-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E ANGOLA DE
2009-05-27 302-990-7XXX 7000–7999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E SEAFORD DE
2009-05-26 302-643-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 MILTON DE
2009-05-22 302-232-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 BRIDGEVL DE
2009-05-22 302-289-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 FELTON DE
2009-05-22 302-364-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 DAGSBORO DE
2009-05-22 302-715-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 LAUREL DE
2009-05-22 302-751-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 FREDERICA DE
2009-05-20 302-362-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E GEORGETOWN DE
2009-05-20 302-669-3XXX 3000–3999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E NEW CASTLE DE
2009-05-20 302-864-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - DE 783E REHOBOTH DE
2009-05-06 302-223-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 SMYRNA DE
2009-05-06 302-524-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 SELBYVILLE DE
2009-05-06 302-648-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 MILLSBORO DE
2009-05-06 302-698-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 CAMDEN DE
2009-05-06 302-725-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 MILFORD DE
2009-05-06 302-990-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - DE 7220 SEAFORD DE
2009-05-01 302-514-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SMYRNA DE
2009-05-01 302-538-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J CAMDEN DE
2009-05-01 302-538-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J CAMDEN DE
2009-05-01 302-672-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J DOVER DE
2009-05-01 302-744-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DOVER DE
2009-04-29 302-538-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CAMDEN DE
2009-04-28 302-416-1XXX 1000–1999Assigned METROPCS, INC. 5562 WILMINGTON DE
2009-04-14 302-566-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J HARRINGTON DE
2009-04-08 302-469-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FELTON DE
2009-04-03 302-607-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J NEWARK DE
2009-04-02 302-538-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
2009-03-27 302-613-8XXX 8000–8999Assigned METROPCS, INC. 5562 NEW CASTLE DE
2009-03-27 302-613-9XXX 9000–9999Assigned METROPCS, INC. 5562 NEW CASTLE DE
2009-03-27 302-669-5XXX 5000–5999Assigned METROPCS, INC. 5562 NEW CASTLE DE
2009-03-26 302-468-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - DE 073F WILMINGTON DE

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.