rirtracker

IPv4 range · 65,536 addresses

172.255.0.0/16

Now

ARIN statistics
Allocated (dated 2013-03-13), allocated (dated 2016-02-22) (CA, US), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

+ Add Apparent new issuance

Reported
2013-03-13 (ARIN)
Confidence
Strong inference
Inventory
Likely issued from ARIN-controlled inventory

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.

2013-03-13 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 172.255.0.0-172.255.255.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it available on 2013-03-12 and allocated (dated 2013-03-13) on 2013-03-14. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2013-03-13: "Add 172.255.0.0-172.255.255.255" source · retrieved
  2. Before ARIN delegated statistics 2013-03-12 (produced 2013-03-12T05:06:07+00:00), before the report: available source · retrieved
  3. After ARIN delegated statistics 2013-03-14 (produced 2013-03-14T05:06:11+00:00), after the report: allocated (dated 2013-03-13) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.1)
  3. : Apparent new issuance, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current

Sold in pieces

9 pieces of this block transferred since 2008-12-01, 40% of it so far.

DatePieceWhat happenedFromTo
2016-02-22 172.255.48.0/20Intra-ARIN transfer Nobis Technology Group, LLC ARINGossamer Threads Inc. ARIN
2017-04-25 172.255.0.0/20Transfer out of ARIN Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
2017-04-25 172.255.96.0/20Transfer out of ARIN Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
2017-04-25 172.255.136.0/21Transfer out of ARIN Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
2017-04-25 172.255.192.0/20Transfer out of ARIN Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
2017-04-25 172.255.224.0/20Transfer out of ARIN Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
2017-04-25 172.255.248.0/21Transfer out of ARIN Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
2026-01-07 172.255.208.0/22Transfer out of ARIN Leaseweb USA, Inc. ARINLEASEWEB SINGAPORE PTE. LTD. APNIC
2026-08-27 172.255.214.0/23Transfer out of ARIN Leaseweb USA, Inc. ARINLEASEWEB AUSTRALIA PTY LIMITED APNIC

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-09-01APNIC172.255.212.0/23Transfer logTransfer into APNIC
2026-08-31ARIN172.255.212.0/23Not in ARIN-IssuedTransfer out of ARIN
2026-08-27ARIN172.255.214.0/23Transfer logTransfer out of ARIN
2026-08-27APNIC172.255.214.0/23Transfer logTransfer into APNIC
2026-01-07ARIN172.255.208.0/22Transfer logTransfer out of ARIN
2026-01-07APNIC172.255.208.0/22Transfer logTransfer into APNIC
2021-02-15ARIN172.255.16.0/20Transfer logMerger/acquisition
2021-02-15ARIN172.255.32.0/20Transfer logMerger/acquisition
2021-02-15ARIN172.255.64.0/19Transfer logMerger/acquisition
2021-02-15ARIN172.255.112.0/20Transfer logMerger/acquisition
2021-02-15ARIN172.255.128.0/21Transfer logMerger/acquisition
2021-02-15ARIN172.255.144.0/20Transfer logMerger/acquisition
2021-02-15ARIN172.255.160.0/19Transfer logMerger/acquisition
2021-02-15ARIN172.255.208.0/20Transfer logMerger/acquisition
2021-02-15ARIN172.255.240.0/21Transfer logMerger/acquisition
2017-04-25ARIN172.255.0.0/20Transfer logTransfer out of ARIN
2017-04-25RIPE NCC172.255.0.0/20Transfer logTransfer into the RIPE NCC
2017-04-25ARIN172.255.96.0/20Transfer logTransfer out of ARIN
2017-04-25RIPE NCC172.255.96.0/20Transfer logTransfer into the RIPE NCC
2017-04-25ARIN172.255.136.0/21Transfer logTransfer out of ARIN
2017-04-25RIPE NCC172.255.136.0/21Transfer logTransfer into the RIPE NCC
2017-04-25ARIN172.255.192.0/20Transfer logTransfer out of ARIN
2017-04-25RIPE NCC172.255.192.0/20Transfer logTransfer into the RIPE NCC
2017-04-25ARIN172.255.224.0/20Transfer logTransfer out of ARIN
2017-04-25RIPE NCC172.255.224.0/20Transfer logTransfer into the RIPE NCC
2017-04-25ARIN172.255.248.0/21Transfer logTransfer out of ARIN
2017-04-25RIPE NCC172.255.248.0/21Transfer logTransfer into the RIPE NCC
2016-02-22ARIN172.255.48.0/20+ AddIntra-ARIN transfer

Transfer records (28)

Date (UTC)LogTypeRange movedFromTo
ARINResource transfer172.255.212.0/23 Leaseweb USA, Inc. ARINLEASEWEB SINGAPORE PTE. LTD. APNIC
APNICResource transfer172.255.212.0/23 LU ARINLEASEWEB SINGAPORE PTE. LTD. APNIC
ARINResource transfer172.255.214.0/23 Leaseweb USA, Inc. ARINLEASEWEB AUSTRALIA PTY LIMITED APNIC
APNICResource transfer172.255.214.0/23 LU ARINLEASEWEB AUSTRALIA PTY LIMITED APNIC
ARINResource transfer172.255.208.0/22 Leaseweb USA, Inc. ARINLEASEWEB SINGAPORE PTE. LTD. APNIC
APNICResource transfer172.255.208.0/22 LU ARINLEASEWEB SINGAPORE PTE. LTD. APNIC
ARINMerger acquisition172.255.16.0/20 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.32.0/20 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.64.0/19 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.112.0/20 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.128.0/21 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.144.0/20 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.160.0/19 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.208.0/20 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
ARINMerger acquisition172.255.240.0/21 Nobis Technology Group, LLC ARINLeaseweb USA, Inc. ARIN
RIPE NCCResource transfer172.255.0.0/20 (no name given) ARINServers.com B.V. RIPE NCC
RIPE NCCResource transfer172.255.96.0/20 (no name given) ARINServers.com B.V. RIPE NCC
RIPE NCCResource transfer172.255.136.0/21 (no name given) ARINServers.com B.V. RIPE NCC
RIPE NCCResource transfer172.255.192.0/20 (no name given) ARINServers.com B.V. RIPE NCC
RIPE NCCResource transfer172.255.224.0/20 (no name given) ARINServers.com B.V. RIPE NCC
RIPE NCCResource transfer172.255.248.0/21 (no name given) ARINServers.com B.V. RIPE NCC
ARINResource transfer172.255.0.0/20 Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
ARINResource transfer172.255.96.0/20 Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
ARINResource transfer172.255.136.0/21 Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
ARINResource transfer172.255.192.0/20 Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
ARINResource transfer172.255.224.0/20 Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
ARINResource transfer172.255.248.0/21 Nobis Technology Group, LLC ARINServers.com B.V. RIPE NCC
ARINResource transfer172.255.48.0/20 Nobis Technology Group, LLC ARINGossamer Threads 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/172.255.0.0-172.255.255.255.json