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 616
MICHIGAN BELL TEL CO 143
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 61
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 52
ONVOY, LLCV - MI 41
NEW CINGULAR WIRELESS PCS, LLC - IL 37
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 NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2009-09-09 616-258 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2009-06-25 616-214 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2009-06-12 616-206 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2009-03-03 616-232 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENVILLE MI
2009-02-06 616-420 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C ALTO MI
2009-01-07 616-589 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 GRAND RPDS MI
2008-12-30 616-309 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2008-11-20 616-255 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J GREENVILLE MI
2008-10-28 616-947 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLCV - MI 543C MARNE MI
2008-10-16 616-929 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2008-04-10 616-267 0–9 XXXwhole prefix which blocks → MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2008-04-10 616-272 0–9 XXXall 10 · 5 holders which blocks → CLEAR RATE COMMUNICATIONS, LLC 046L GRAND RPDS MI
2008-02-07 616-951 0–9 XXXall 10 · 6 holders which blocks → FIRST COMMUNICATIONS, LLC 460K ROCKFORD MI
2007-12-28 616-805 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2007-07-31 616-730 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J BYRON CTR MI
2007-07-03 616-685 0–9 XXXall 10 · 2 holders which blocks → MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2007-06-07 616-577 0–9 XXXall 10 · 9 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SARANAC MI
2007-03-28 616-953 0–9 XXXall 10 · 8 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ZEELAND MI
2006-12-11 616-952 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 KENT CITY MI
2006-11-13 616-884 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C ROCKFORD MI
2006-08-16 616-719 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2006-02-15 616-803 0–9 XXXall 10 · 6 holders which blocks → MICHIGAN BELL TEL CO 9323 DUTTON MI
2006-01-19 616-328 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2005-08-24 616-808 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2004-12-20 616-545 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ORLEANS MI
2004-12-06 616-205 0–9 XXXall 10 · 8 holders which blocks → TELNET WORLDWIDE, INC. 817J SPARTA MI
2004-12-06 616-757 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELNET WORLDWIDE, INC. 817J BORCULO MI
2004-12-06 616-986 0XXX1XXX5XXX6XXX8XXX · 5 holders which blocks → TELNET WORLDWIDE, INC. 817J ALLENDALE MI
2004-11-23 616-788 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GREENVILLE MI
2004-11-17 616-277 0–9 XXXall 10 · 8 holders which blocks → TELNET WORLDWIDE, INC. 817J BYRON CTR MI
2004-10-26 616-477 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J GRAND RPDS MI
2004-10-05 616-322 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2004-09-29 616-384 0–9 XXXall 10 · 7 holders which blocks → ACD TELECOM, INC. - MI 3535 COOPERSVL MI
2004-09-29 616-537 0–9 XXXall 10 · 8 holders which blocks → ACD TELECOM, INC. - MI 3535 LAKEODESSA MI
2004-09-29 616-841 0–9 XXXall 10 · 9 holders which blocks → ACD TELECOM, INC. - MI 3535 IONIA MI
2004-06-22 616-504 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CLARKSVL MI
2004-04-21 616-217 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BYRON CTR MI
2004-04-09 616-209 0–9 XXXall 10 · 8 holders which blocks → ACE TELEPHONE COMPANY OF MICHIGAN, INC. 736B HUDSONVL MI
2004-02-05 616-200 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J TRUFANT MI
2003-12-22 616-244 0–9 XXXall 10 · 10 holders which blocks → PAETEC ITEL, LLC 829J BELDING MI
2003-05-01 616-755 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 IONIA MI
2003-02-05 616-885 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J GRAND RPDS MI
2002-12-31 616-955 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 GRAND RPDS MI
2002-09-17 616-780 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2002-09-17 616-799 6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 CEDAR SPG MI
2002-09-17 616-826 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2002-08-21 616-608 2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → 123.NET, LLC 2550 GRAND RPDS MI
2002-07-19 616-499 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 HOLLAND MI
2002-07-19 616-855 not yet reported which blocks → PAETEC ITEL, LLC 829J GRAND RPDS MI
2002-07-19 616-894 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GREENVILLE MI

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.