rirtracker

IPv4 range · 65,536 addresses

174.128.0.0/16

Now

ARIN statistics
Allocated (16 records, dated 2010-06-17 to 2026-06-04) (only part of the range) (US), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

− Remove Unresolved change

Reported
2010-04-12 (ARIN)
Confidence
Observed only
Inventory
Inventory effect unknown

Hold

Removed
2009-04-08 (ARIN)
Estimated hold end
2009-06-07 (from ARIN's published rule)

Timeline (2)

Every change the tracker has found, newest first. It covers ARIN from 2008-12-01, the RIPE NCC from 2010-04-23, APNIC from 2008-02-15, LACNIC from 2012-06-29 and AFRINIC from 2012-10-03.

2010-04-12 ARIN − Remove Unresolved change Observed only
ARIN-Issued
Remove 174.128.0.0-174.128.255.255
Inventory
Inventory effect unknown

ARIN-Issued says "Remove", but ARIN's statistics show it not issued on 2010-04-11 and not issued on 2010-04-13. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2010-04-12: "Remove 174.128.0.0-174.128.255.255" source · retrieved
  2. Before ARIN delegated statistics 2010-04-11, before the report: not issued source · retrieved
  3. After ARIN delegated statistics 2010-04-13, after the report: not issued source · retrieved
Classification history for this change (4 versions)
  1. : Unresolved change, observed only (classifier 1.3.0)
  2. : Unresolved change, observed only (classifier 1.3.1)
  3. : Unresolved change, observed only (classifier 1.3.2)
  4. : Unresolved change, observed only (classifier 1.4.0) current
2009-04-08 ARIN Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2009-06-07. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2008-02-27) on 2009-04-07 and not issued on 2009-04-09. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2009-06-07. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 174.128.0.0/16 assigned on 2009-04-08, not listed on 2009-04-09 source · retrieved
  2. Before ARIN delegated statistics 2009-04-07, before the report: assigned (dated 2008-02-27) source · retrieved
  3. After ARIN delegated statistics 2009-04-09, after the report: not issued source · retrieved
Classification history for this change (4 versions)
  1. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
  2. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
  3. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
  4. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-09-01APNIC174.128.204.0/22Transfer logTransfer into APNIC
2026-08-31ARIN174.128.204.0/22Not in ARIN-IssuedTransfer out of ARIN
2026-06-04ARIN174.128.200.0/22+ AddIntra-ARIN transfer
2024-05-29ARIN174.128.192.0/21Transfer logMerger/acquisition
2024-05-29ARIN174.128.208.0/21Transfer logMerger/acquisition
2022-11-17ARIN174.128.186.0/23Transfer logMerger/acquisition
2020-02-25ARIN174.128.0.0/18Transfer logMerger/acquisition
2019-09-09ARIN174.128.191.0/24+ AddIntra-ARIN transfer
2019-07-29ARIN174.128.190.0/24+ AddIntra-ARIN transfer
2019-07-11ARIN174.128.188.0/23+ AddIntra-ARIN transfer
2019-07-01ARIN174.128.185.0/24+ AddIntra-ARIN transfer
2019-06-17ARIN174.128.128.0/19+ AddIntra-ARIN transfer
2019-06-13ARIN174.128.186.0/23+ AddIntra-ARIN transfer
2019-05-09ARIN174.128.184.0/24+ AddIntra-ARIN transfer
2019-04-15ARIN174.128.128.0/18Transfer logMerger/acquisition
2010-11-17ARIN174.128.224.0/19+ AddApparent reissuance
2010-07-01ARIN174.128.192.0/20+ AddApparent reissuance
2010-06-23ARIN174.128.128.0/18+ AddApparent reissuance
2010-06-22ARIN174.128.64.0/18+ AddApparent reissuance
2010-06-17ARIN174.128.0.0/18+ AddApparent reissuance

Transfer records (15)

Date (UTC)LogTypeRange movedFromTo
ARINResource transfer174.128.204.0/22 Towerstream I, Inc. ARINPALANTIR TECHNOLOGIES INC. APNIC
APNICResource transfer174.128.204.0/22 TOWER-20 ARINIndonesia Network Information Center/IDNIC-RNA-ID APNIC
ARINResource transfer174.128.200.0/22 Towerstream I, Inc. ARINWIGGINS TELEPHONE ASSOCIATION ARIN
ARINMerger acquisition174.128.192.0/21 Towerstream I, Inc. ARINNatural Wireless, LLC ARIN
ARINMerger acquisition174.128.208.0/21 Towerstream I, Inc. ARINNatural Wireless, LLC ARIN
ARINMerger acquisition174.128.186.0/23 On Deck Capital, Inc. ARINEnova International, Inc. ARIN
ARINMerger acquisition174.128.0.0/18 IO Capital Princess, LLC ARINIron Mountain Data Center ARIN
ARINResource transfer174.128.191.0/24 Atlantic Metro Communications II, Inc. ARINPrivate National Mortgage Acceptance Company LLC ARIN
ARINResource transfer174.128.190.0/24 Atlantic Metro Communications II, Inc. ARINNational Mortgage Insurance Corporation ARIN
ARINResource transfer174.128.188.0/23 Atlantic Metro Communications II, Inc. ARINNetwork Technology Solutions, LLC ARIN
ARINResource transfer174.128.185.0/24 Atlantic Metro Communications II, Inc. ARINBENJAMIN MOORE & CO ARIN
ARINResource transfer174.128.128.0/19 Atlantic Metro Communications II, Inc. ARINecoLINK ARIN
ARINResource transfer174.128.186.0/23 Atlantic Metro Communications II, Inc. ARINOn Deck Capital, Inc. ARIN
ARINResource transfer174.128.184.0/24 Atlantic Metro Communications II, Inc. ARINTELCOR Inc ARIN
ARINMerger acquisition174.128.128.0/18 InfoRelay Online Systems, Inc. ARINAtlantic Metro Communications II, Inc. ARIN

Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this IPv4 range (ARIN's from 2009, the RIPE NCC's from 2012, APNIC's from 2010, LACNIC's from 2016, AFRINIC's from 2018). A transfer between two registries is in both logs.

RDAP lookups

Not looked up. The tracker queries RDAP for changes as they're reported (on first sight, after 24 hours and after seven days); older changes aren't looked up because today's RDAP says nothing about the past.

This page as data: ip/174.128.0.0-174.128.255.255.json