NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 708
COMCAST IP PHONE, LLC 19
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
2019-12-16 708-694 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MOKENA IL
2015-07-28 708-967 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CHICGOZN03 IL
2012-12-20 708-631 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BLUEISLAND IL
2011-12-16 708-304 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J CRETE IL
2008-07-10 708-629 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J BLUEISLAND IL
2006-10-25 708-529 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J OAK LAWN IL
2006-06-21 708-248 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CHICAGOHTS IL
— 708-223 2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MAYWOOD IL
— 708-251 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J LANSING IL
— 708-298 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CICERO IL
— 708-505 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J WESTERNSPG IL
— 708-540 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BELLWOOD IL
— 708-689 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J FOREST IL
— 708-856 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → COMCAST IP PHONE, LLC 318J CHICAGOHTS IL
— 708-897 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J BLUEISLAND IL
— 708-905 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J BROOKFIELD IL
— 708-914 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J HOMEWOOD IL
— 708-925 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J BLUEISLAND IL
— 708-960 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J HOMEWOOD IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.