rirtracker

IPv4 range · 65,536 addresses

161.129.0.0/16

Now

ARIN statistics
Allocated (53 records, dated 2018-03-28 to 2024-09-09) (CA, US), in the latest file
Registry
ARIN
Holder
Not looked up
From
ARIN's latest statistics

Latest change

Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable)

Reported
2017-04-11 (ARIN)
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

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.

2017-04-11 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 2017-06-10. 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 1992-08-05) on 2017-04-10 and reserved on 2017-04-12. 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 2017-06-10. 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: 161.129.0.0/16 assigned on 2017-04-11, reserved on 2017-04-12 source · retrieved
  2. Before ARIN delegated statistics 2017-04-10 (produced 2017-04-10T05:09:04+00:00), before the report: assigned (dated 1992-08-05) source · retrieved
  3. After ARIN delegated statistics 2017-04-12 (produced 2017-04-12T05:10:43+00:00), after the report: reserved 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
2026-03-06ARIN161.129.188.0/24Transfer logMerger/acquisition
2024-11-21ARIN161.129.30.0/24Transfer logMerger/acquisition
2024-09-09ARIN161.129.64.0/21+ AddIntra-ARIN transfer
2024-03-21ARIN161.129.72.0/24Transfer logMerger/acquisition
2024-02-06ARIN161.129.152.0/22Transfer logMerger/acquisition
2023-08-08ARIN161.129.245.0/24Transfer logMerger/acquisition
2022-07-13ARIN161.129.80.0/20+ AddIntra-ARIN transfer
2022-04-21ARIN161.129.192.0/20+ AddIntra-ARIN transfer
2021-11-12ARIN161.129.160.0/20Transfer logMerger/acquisition
2021-10-01ARIN161.129.180.0/22+ AddApparent reissuance
2021-10-01ARIN161.129.180.0/22− RemoveARIN pool record
2021-07-22ARIN161.129.208.0/20+ AddIntra-ARIN transfer
2021-06-02ARIN161.129.144.0/21Transfer logMerger/acquisition
2021-01-25ARIN161.129.160.0/20+ AddIntra-ARIN transfer
2020-12-07ARIN161.129.180.0/22Not in ARIN-IssuedRemoved
2020-10-05ARIN161.129.176.0/24+ AddApparent reissuance
2020-10-05ARIN161.129.176.0/24− RemoveARIN pool record
2020-09-29ARIN161.129.244.0/24+ AddApparent reissuance
2020-09-29ARIN161.129.244.0/24− RemoveARIN pool record
2020-09-28ARIN161.129.176.0/24− RemoveNo material change
2020-09-28ARIN161.129.244.0/24− RemoveNo material change
2020-05-14ARIN161.129.128.0/21+ AddIntra-ARIN transfer
2020-03-25ARIN161.129.24.0/22Transfer logMerger/acquisition
2019-11-12ARIN161.129.60.0/24Transfer logMerger/acquisition
2019-11-04ARIN161.129.176.0/24Not in ARIN-IssuedRemoved
2019-11-04ARIN161.129.244.0/24Not in ARIN-IssuedRemoved
2019-08-08ARIN161.129.245.0/24+ AddIntra-ARIN transfer
2018-08-30ARIN161.129.64.0/21Transfer logMerger/acquisition
2018-08-07ARIN161.129.64.0/21Transfer logMerger/acquisition
2018-08-06ARIN161.129.177.0/24+ AddApparent reissuance
2018-08-06ARIN161.129.177.0/24− RemoveARIN pool record
2018-08-01ARIN161.129.246.0/23+ AddApparent reissuance
2018-08-01ARIN161.129.246.0/23− RemoveARIN pool record
2018-07-24ARIN161.129.245.0/24+ AddApparent reissuance
2018-07-24ARIN161.129.245.0/24− RemoveARIN pool record
2018-07-06ARIN161.129.74.0/23+ AddApparent reissuance
2018-07-06ARIN161.129.74.0/23− RemoveARIN pool record
2018-06-19ARIN161.129.244.0/24+ AddApparent reissuance
2018-06-19ARIN161.129.244.0/24− RemoveARIN pool record
2018-06-12ARIN161.129.72.0/24+ AddApparent reissuance
2018-06-12ARIN161.129.72.0/24− RemoveARIN pool record
2018-06-11ARIN161.129.72.0/24− RemoveNo material change
2018-06-11ARIN161.129.74.0/23− RemoveNo material change
2018-06-11ARIN161.129.177.0/24− RemoveNo material change
2018-06-11ARIN161.129.244.0/22− RemoveNo material change
2018-06-01ARIN161.129.176.0/24+ AddApparent reissuance
2018-06-01ARIN161.129.176.0/24− RemoveARIN pool record
2018-05-29ARIN161.129.144.0/21+ AddApparent reissuance
2018-05-29ARIN161.129.144.0/21− RemoveARIN pool record
2018-05-02ARIN161.129.22.0/24+ AddApparent reissuance
2018-05-02ARIN161.129.22.0/24− RemoveARIN pool record
2018-04-27ARIN161.129.192.0/19+ AddApparent reissuance
2018-04-27ARIN161.129.192.0/19− RemoveARIN pool record
2018-04-26ARIN161.129.178.0/23+ AddApparent reissuance
2018-04-26ARIN161.129.178.0/23− RemoveARIN pool record
2018-04-20ARIN161.129.56.0/22+ AddApparent reissuance
2018-04-20ARIN161.129.56.0/22− RemoveARIN pool record
2018-04-19ARIN161.129.160.0/20+ AddApparent reissuance
2018-04-19ARIN161.129.160.0/20− RemoveARIN pool record
2018-04-16ARIN161.129.187.0/24+ AddApparent reissuance

Transfer records (18)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition161.129.188.0/24 Westelcom Internet, Inc. ARINSlic Network Solutions, Inc ARIN
ARINMerger acquisition161.129.30.0/24 Full Throttle Networks Inc. ARINXplornet Communications Inc. ARIN
ARINResource transfer161.129.64.0/21 QuadraNet Enterprises LLC ARINInterserver, Inc ARIN
ARINMerger acquisition161.129.72.0/24 Dynamic Signal, Inc. ARINFirstup, Inc. ARIN
ARINMerger acquisition161.129.152.0/22 Nexril ARINPureVoltage Hosting Inc. ARIN
ARINMerger acquisition161.129.245.0/24 Fastnet Communications ARINFlexNetworks ARIN
ARINResource transfer161.129.80.0/20 Digicloud Solutions Corporation ARINIland Internet Solutions Corporation ARIN
ARINResource transfer161.129.192.0/20 Radia Telecom Inc ARINSCI REMC ARIN
ARINMerger acquisition161.129.160.0/20 OCULUS SOLUTIONS LLC ARINOCULUS NETWORKS INC ARIN
ARINResource transfer161.129.208.0/20 Radia Telecom Inc ARINDatto, Inc ARIN
ARINMerger acquisition161.129.144.0/21 CINTEK ARINTELUS Communications Inc. ARIN
ARINResource transfer161.129.160.0/20 9421092 Canada Inc. ARINOCULUS SOLUTIONS LLC ARIN
ARINResource transfer161.129.128.0/21 FAL Networks ARINWestman Communications Group ARIN
ARINMerger acquisition161.129.24.0/22 Monument & Cathedral Holdings, Inc. ARIN14 W Administrative Services LLC ARIN
ARINMerger acquisition161.129.60.0/24 10VPN Hosting ARINFree Range Cloud Hosting Inc. ARIN
ARINResource transfer161.129.245.0/24 FluxWeb LLC ARINFastnet Communications ARIN
ARINMerger acquisition161.129.64.0/21 QuadraNet, Inc ARINQuadraNet Enterprises LLC ARIN
ARINMerger acquisition161.129.64.0/21 BuffaloColo, LLC ARINQuadraNet, 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.

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