NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

11 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 573
INTRADO COMMUNICATIONS, LLC 4
ONVOY, LLC - MO 2
BANDWIDTH.COM CLEC, LLC - MO 2
EXIANT COMMUNICATIONS LLC 1
E. RITTER COMMUNICATIONS, 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2013-04-09 573-608-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F STEGNVIEVE MO
2013-04-09 573-608-9XXX 9000–9999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F STEGNVIEVE MO
2013-04-09 573-628-0XXX 0000–0999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F WARDELL MO
2013-04-09 573-628-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F WARDELL MO
2013-04-09 573-678-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F RICHWOODS MO
2013-04-09 573-678-8XXX 8000–8999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F RICHWOODS MO
2013-04-09 573-684-7XXX 7000–7999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F WELLSVILLE MO
2013-04-09 573-684-9XXX 9000–9999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F WELLSVILLE MO
2013-04-09 573-703-8XXX 8000–8999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F SIKESTON MO
2013-04-09 573-703-9XXX 9000–9999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F SIKESTON MO
2013-04-09 573-772-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F POPLAR BLF MO
2013-04-09 573-772-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F POPLAR BLF MO
2013-04-08 573-207-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F GRAVOIS ML MO
2013-04-08 573-207-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F GRAVOIS ML MO
2013-04-08 573-212-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ORAN MO
2013-04-08 573-212-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ORAN MO
2013-04-08 573-227-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MARSTON MO
2013-04-08 573-227-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MARSTON MO
2013-04-08 573-246-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CAMPBELL MO
2013-04-08 573-246-7XXX 7000–7999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CAMPBELL MO
2013-04-08 573-271-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CAPEGIRARD MO
2013-04-08 573-281-3XXX 3000–3999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MALDEN MO
2013-04-08 573-283-0XXX 0000–0999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ESSEX MO
2013-04-08 573-283-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ESSEX MO
2013-04-08 573-290-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CAPEGIRARD MO
2013-04-08 573-309-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F BELL CITY MO
2013-04-08 573-309-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F BELL CITY MO
2013-04-08 573-316-3XXX 3000–3999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CARDWELL MO
2013-04-08 573-316-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CARDWELL MO
2013-04-08 573-318-3XXX 3000–3999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CHAFFEE MO
2013-04-08 573-319-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MACKSCREEK MO
2013-04-08 573-319-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MACKSCREEK MO
2013-04-08 573-327-3XXX 3000–3999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F FLAT RIVER MO
2013-04-08 573-327-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F FLAT RIVER MO
2013-04-08 573-347-7XXX 7000–7999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CLIMAX SPG MO
2013-04-08 573-347-8XXX 8000–8999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CLIMAX SPG MO
2013-04-08 573-349-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F PATTON MO
2013-04-08 573-349-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F PATTON MO
2013-04-08 573-360-3XXX 3000–3999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F E PRAIRIE MO
2013-04-08 573-360-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F E PRAIRIE MO
2013-04-08 573-362-0XXX 0000–0999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F FISK MO
2013-04-08 573-362-1XXX 1000–1999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F FISK MO
2013-04-08 573-370-3XXX 3000–3999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F GIDEON MO
2013-04-08 573-370-4XXX 4000–4999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F GIDEON MO
2013-04-08 573-385-6XXX 6000–6999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F LILBOURN MO
2013-04-08 573-385-7XXX 7000–7999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F LILBOURN MO
2013-04-08 573-416-8XXX 8000–8999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F FULTON MO
2013-04-08 573-416-9XXX 9000–9999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F FULTON MO
2013-04-08 573-427-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CHARLESTON MO
2013-04-08 573-479-5XXX 5000–5999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F HAYTI MO

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.