rirtracker

IPv4 range · 3 prefixes · 19,456 addresses

148.163.180.0 - 148.163.255.255

148.163.180.0/22, 148.163.184.0/21, 148.163.192.0/18

Now

ARIN statistics
Allocated (dated 2014-06-17), allocated (dated 2018-06-05), allocated (dated 2025-09-30) (US), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

− Remove Unresolved change

Reported
2011-09-28 (ARIN)
Confidence
Observed only
Inventory
Inventory effect unknown

Timeline (1)

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.

2011-09-28 ARIN − Remove Unresolved change Observed only
ARIN-Issued
Remove 148.163.180.0-148.163.255.255
Inventory
Inventory effect unknown

ARIN-Issued says "Remove", but ARIN's statistics show it not issued on 2011-09-27 and not issued on 2011-09-29. (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 2011-09-28: "Remove 148.163.180.0-148.163.255.255" source · retrieved
  2. Before ARIN delegated statistics 2011-09-27, before the report: not issued source · retrieved
  3. After ARIN delegated statistics 2011-09-29, 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

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2025-09-30ARIN148.163.180.0/22+ AddApparent reissuance
2025-09-30ARIN148.163.180.0/22− RemoveARIN pool record
2023-02-08ARIN148.163.184.0/22Transfer logTransfer out of ARIN
2023-02-08RIPE NCC148.163.184.0/22Transfer logTransfer into the RIPE NCC
2018-11-06ARIN148.163.180.0/22Not in ARIN-IssuedRemoved
2018-06-05ARIN148.163.184.0/22+ AddApparent reissuance
2018-06-05ARIN148.163.184.0/21− RemoveARIN pool record
2018-06-01ARIN148.163.184.0/21− RemoveNo material change
2017-06-13ARIN148.163.184.0/21Not in ARIN-IssuedRemoved
2016-10-25ARIN148.163.192.0/18Transfer logMerger/acquisition
2016-06-07ARIN148.163.184.0/21Not in ARIN-IssuedRemoved
2015-05-05ARIN148.163.184.0/21+ AddApparent new issuance
2015-04-10ARIN148.163.180.0/22+ AddApparent new issuance
2015-04-10ARIN148.163.180.0/22− RemoveARIN pool record
2014-06-17ARIN148.163.192.0/18+ AddApparent new issuance

Transfer records (3)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer148.163.184.0/22 (no name given) ARINSETCOR d.o.o. RIPE NCC
ARINResource transfer148.163.184.0/22 PROVDC ARINSETCOR d.o.o. RIPE NCC
ARINMerger acquisition148.163.192.0/18 Host Virtual, Inc ARINNetActuate, 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/148.163.180.0-148.163.255.255.json