rirtracker

IPv4 range · 6 prefixes · 31,488 addresses

163.123.133.0 - 163.123.255.255

163.123.133.0/24, 163.123.134.0/23, 163.123.136.0/21, 163.123.144.0/20, 163.123.160.0/19, 163.123.192.0/18

Now

ARIN statistics
Allocated (46 records, dated 2020-09-28 to 2025-09-30), reserved (2 records) (CA, US), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

− Remove Change to ARIN's own pool record

Reported
2020-09-28 (ARIN)
Confidence
Observed only
Inventory
Part of the issuance reported the same day

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.

2020-09-28 ARIN − Remove Change to ARIN's own pool record Observed only
ARIN-Issued
Remove 163.123.133.0-163.123.255.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2020-09-27 and allocated (dated 2020-09-28), reserved on 2020-09-29. ARIN removed its own pool record for this range as part of issuing it: the same report adds 163.123.134.0-163.123.135.255, 163.123.139.0-163.123.139.255, 163.123.144.0-163.123.147.255, 163.123.148.0-163.123.151.255 and 4 more. The issuance is explained on those lines. Another change to this range was reported the day before or after (2020-09-29: Remove 163.123.133.0-163.123.133.255; 2020-09-29: Remove 163.123.136.0-163.123.136.255; 2020-09-29: Remove 163.123.138.0-163.123.138.255), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2020-09-28: "Remove 163.123.133.0-163.123.255.255" source · retrieved
  2. Before ARIN delegated statistics 2020-09-27 (produced 2020-09-27T14:00:13+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2020-09-29 (produced 2020-09-29T14:00:14+00:00), after the report: allocated (dated 2020-09-28), reserved source · retrieved
Classification history for this change (4 versions)
  1. : Change to ARIN's own pool record, observed only (classifier 1.3.0)
  2. : Change to ARIN's own pool record, observed only (classifier 1.3.1)
  3. : Change to ARIN's own pool record, observed only (classifier 1.3.2)
  4. : Change to ARIN's own pool record, observed only (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-10-08RIPE NCC163.123.193.0/24Transfer logTransfer into the RIPE NCC
2026-10-08ARIN163.123.193.0/24Not in ARIN-IssuedTransfer out of ARIN
2026-10-08RIPE NCC163.123.195.0/24Transfer logTransfer into the RIPE NCC
2026-10-08ARIN163.123.195.0/24Not in ARIN-IssuedTransfer out of ARIN
2026-03-09ARIN163.123.232.0/22Not in ARIN-IssuedRemoved
2026-02-11ARIN163.123.192.0/24Transfer logTransfer out of ARIN
2026-02-11RIPE NCC163.123.192.0/24Transfer logTransfer into the RIPE NCC
2026-02-11ARIN163.123.194.0/24Transfer logTransfer out of ARIN
2026-02-11RIPE NCC163.123.194.0/24Transfer logTransfer into the RIPE NCC
2026-02-09ARIN163.123.191.0/24Not in ARIN-IssuedRemoved
2025-12-11ARIN163.123.198.0/23Transfer logMerger/acquisition
2025-09-30ARIN163.123.236.0/22+ AddApparent reissuance
2025-09-30ARIN163.123.236.0/22− RemoveARIN pool record
2025-06-18ARIN163.123.191.0/24Not in ARIN-IssuedRemoved
2025-03-26ARIN163.123.148.0/22Transfer logMerger/acquisition
2024-08-07ARIN163.123.220.0/22Transfer logMerger/acquisition
2024-02-06ARIN163.123.204.0/22Transfer logMerger/acquisition
2023-08-22ARIN163.123.164.0/22Transfer logMerger/acquisition
2023-02-06ARIN163.123.236.0/22Not in ARIN-IssuedRemoved
2022-05-11ARIN163.123.192.0/22Transfer logMerger/acquisition
2021-04-22ARIN163.123.192.0/22Transfer logMerger/acquisition
2020-11-19ARIN163.123.190.0/24+ AddApparent reissuance
2020-11-19ARIN163.123.190.0/24− RemoveARIN pool record
2020-10-21ARIN163.123.189.0/24+ AddApparent reissuance
2020-10-21ARIN163.123.189.0/24− RemoveARIN pool record
2020-10-14ARIN163.123.212.0/22+ AddApparent reissuance
2020-10-14ARIN163.123.212.0/22− RemoveARIN pool record
2020-10-14ARIN163.123.246.0/23+ AddApparent reissuance
2020-10-14ARIN163.123.246.0/23− RemoveARIN pool record
2020-10-12ARIN163.123.176.0/24+ AddApparent reissuance
2020-10-12ARIN163.123.176.0/24− RemoveARIN pool record
2020-10-12ARIN163.123.180.0/22+ AddApparent reissuance
2020-10-12ARIN163.123.180.0/22− RemoveARIN pool record
2020-10-08ARIN163.123.188.0/24+ AddApparent reissuance
2020-10-08ARIN163.123.188.0/24− RemoveARIN pool record
2020-10-08ARIN163.123.227.0/24+ AddApparent reissuance
2020-10-08ARIN163.123.227.0/24− RemoveARIN pool record
2020-10-07ARIN163.123.200.0/22+ AddApparent reissuance
2020-10-07ARIN163.123.200.0/22− RemoveARIN pool record
2020-10-05ARIN163.123.152.0/22+ AddApparent reissuance
2020-10-05ARIN163.123.216.0/24+ AddApparent reissuance
2020-10-05ARIN163.123.216.0/24− RemoveARIN pool record
2020-10-05ARIN163.123.232.0/22+ AddApparent reissuance
2020-10-05ARIN163.123.232.0/22− RemoveARIN pool record
2020-10-04ARIN163.123.152.0/22− RemoveNo material change
2020-10-02ARIN163.123.137.0/24+ AddApparent reissuance
2020-10-02ARIN163.123.137.0/24− RemoveARIN pool record
2020-10-02ARIN163.123.198.0/23+ AddApparent reissuance
2020-10-02ARIN163.123.198.0/23− RemoveARIN pool record
2020-10-02ARIN163.123.226.0/24+ AddApparent reissuance
2020-10-02ARIN163.123.226.0/24− RemoveARIN pool record
2020-10-01ARIN163.123.218.0/24+ AddApparent reissuance
2020-10-01ARIN163.123.218.0/24− RemoveARIN pool record
2020-09-30ARIN163.123.196.0/24+ AddApparent reissuance
2020-09-30ARIN163.123.196.0/24− RemoveARIN pool record
2020-09-30ARIN163.123.197.0/24+ AddApparent reissuance
2020-09-30ARIN163.123.197.0/24− RemoveARIN pool record
2020-09-30ARIN163.123.217.0/24+ AddApparent reissuance
2020-09-30ARIN163.123.217.0/24− RemoveARIN pool record
2020-09-30ARIN163.123.219.0/24+ AddApparent reissuance

Transfer records (16)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer163.123.193.0/24 (no name given) ARINAGX Management Consultancy - FZCO RIPE NCC
RIPE NCCResource transfer163.123.195.0/24 (no name given) ARINAGX Management Consultancy - FZCO RIPE NCC
ARINResource transfer163.123.193.0/24 Path Network, Inc. ARINAGX Management Consultancy - FZCO RIPE NCC
ARINResource transfer163.123.195.0/24 Path Network, Inc. ARINAGX Management Consultancy - FZCO RIPE NCC
RIPE NCCResource transfer163.123.192.0/24 (no name given) ARINSamuel Cosgrove RIPE NCC
RIPE NCCResource transfer163.123.194.0/24 (no name given) ARINSamuel Cosgrove RIPE NCC
ARINResource transfer163.123.192.0/24 Path Network, Inc. ARINSamuel Cosgrove RIPE NCC
ARINResource transfer163.123.194.0/24 Path Network, Inc. ARINSamuel Cosgrove RIPE NCC
ARINMerger acquisition163.123.198.0/23 Cyber Safe Solutions LLC ARINCyberMaxx LLC ARIN
ARINMerger acquisition163.123.148.0/22 Celerity Networks LLC ARINGallatin Wireless Internet, LLC ARIN
ARINMerger acquisition163.123.220.0/22 Tunbroker LLC ARINNetSWAT LLC ARIN
ARINMerger acquisition163.123.204.0/22 Nexril ARINPureVoltage Hosting Inc. ARIN
ARINMerger acquisition163.123.164.0/22 Monster Broadband, Inc. ARINPoint Broadband Fiber Holding, LLC ARIN
ARINMerger acquisition163.123.192.0/22 Packet Rabbit Inc ARINPath Network, Inc. ARIN
ARINMerger acquisition163.123.192.0/22 Geekasaurus Solutions Inc ARINPacket Rabbit Inc ARIN
ARINMerger acquisition163.123.128.0/17 Virtuzo ARINOppoBox LLC 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.

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