rirtracker

IPv4 range · 65,536 addresses

164.138.0.0/16

Now

RIPE NCC statistics
Allocated (dated 2012-03-16), allocated (dated 2012-03-19), allocated (dated 2012-03-20), allocated (dated 2018-07-02), allocated (dated 2025-07-09), allocated (dated 2025-07-10), allocated (dated 2025-07-11), reserved (BE, BG, CY, CZ, DE, ES, FI, FR, GB, IL, IQ, IR, IT, KZ, NL, RU), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

Released Released from hold (the RIPE NCC lists it as 'available')

Reported
2012-03-15 (RIPE NCC)
Confidence
Observed only
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

Hold

Removed
2010-08-07 (RIPE NCC)
Estimated hold end
Not estimated: the RIPE NCC's current hold applies to removals from 2014-03-26 on, and this one came earlier
Released from hold
2012-03-15
Now
Possible reissue candidate; not confirmed available.

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.

2012-03-15 RIPE NCC Released Released from hold (the RIPE NCC lists it as 'available') Observed only
Statistics
164.138.0.0/16 reserved on 2012-03-14, available on 2012-03-15
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

The RIPE NCC's statistics show it reserved on 2012-03-14 and available on 2012-03-15. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-08-07, 586 days earlier. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2012-03-16: Added 164.138.0.0/20; 2012-03-16: Added 164.138.16.0/21; 2012-03-16: Added 164.138.24.0/21), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 164.138.0.0/16 reserved on 2012-03-14, available on 2012-03-15 source · retrieved
  2. Before RIPE NCC delegated statistics 2012-03-14 (produced 2012-03-14T22:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2012-03-15 (produced 2012-03-15T22:59:59+00:00), after the change: available source · retrieved
Classification history for this change (4 versions)
  1. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.0)
  2. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.1)
  3. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.2)
  4. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.4.0) current
2010-08-07 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
164.138.0.0/16 assigned on 2010-08-06, available on 2010-08-07
Inventory
Possible future reissue candidate after hold

Removed from active registration. The tracker found it by comparing the RIPE NCC's daily statistics. The RIPE NCC's statistics show it assigned (dated 2001-09-12) on 2010-08-06 and available on 2010-08-07. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC's current hold for IPv4 space applies to removals from 2014-03-26 on, and this one came earlier, so the tracker gives no estimate. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 164.138.0.0/16 assigned on 2010-08-06, available on 2010-08-07 source · retrieved
  2. Before RIPE NCC delegated statistics 2010-08-06, before the change: assigned (dated 2001-09-12) source · retrieved
  3. After RIPE NCC delegated statistics 2010-08-07, after the change: available 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
2026-06-25RIPE NCC164.138.205.0/24− DeregisteredRemoved
2026-06-25RIPE NCC164.138.207.0/24− DeregisteredRemoved
2026-04-13RIPE NCC164.138.80.0/21Transfer logIntra-RIPE NCC transfer
2025-07-11RIPE NCC164.138.205.0/24+ RegisteredApparent reissuance
2025-07-11RIPE NCC164.138.206.0/24+ RegisteredApparent reissuance
2025-07-11RIPE NCC164.138.207.0/24+ RegisteredApparent reissuance
2025-07-10RIPE NCC164.138.202.0/24+ RegisteredApparent reissuance
2025-07-10RIPE NCC164.138.203.0/24+ RegisteredApparent reissuance
2025-07-10RIPE NCC164.138.204.0/24+ RegisteredApparent reissuance
2025-07-09RIPE NCC164.138.200.0/24+ RegisteredApparent reissuance
2025-07-09RIPE NCC164.138.201.0/24+ RegisteredApparent reissuance
2025-07-03RIPE NCC164.138.200.0/21ReleasedHold released
2024-12-30RIPE NCC164.138.200.0/21− DeregisteredRemoved
2024-12-20RIPE NCC164.138.0.0/20Transfer logIntra-RIPE NCC transfer
2023-11-13RIPE NCC164.138.224.0/21Transfer logIntra-RIPE NCC transfer
2022-12-06RIPE NCC164.138.192.0/21Transfer logMerger/acquisition
2022-05-06RIPE NCC164.138.200.0/21Transfer logMerger/acquisition
2022-04-20RIPE NCC164.138.64.0/20Transfer logIntra-RIPE NCC transfer
2021-07-20RIPE NCC164.138.96.0/22Transfer logIntra-RIPE NCC transfer
2020-11-11RIPE NCC164.138.100.0/22Transfer logIntra-RIPE NCC transfer
2018-07-02RIPE NCC164.138.96.0/22+ RegisteredApparent reissuance
2018-07-02RIPE NCC164.138.100.0/22+ RegisteredApparent reissuance
2016-11-09RIPE NCC164.138.40.0/21Transfer logIntra-RIPE NCC transfer
2014-10-27RIPE NCC164.138.128.0/18Transfer logIntra-RIPE NCC transfer
2014-02-26RIPE NCC164.138.96.0/21ReleasedHold released
2013-02-26RIPE NCC164.138.96.0/21− DeregisteredRemoved
2012-03-20RIPE NCC164.138.192.0/21+ RegisteredApparent reissuance
2012-03-20RIPE NCC164.138.200.0/21+ RegisteredApparent reissuance
2012-03-20RIPE NCC164.138.208.0/21+ RegisteredApparent reissuance
2012-03-20RIPE NCC164.138.216.0/21+ RegisteredApparent reissuance
2012-03-20RIPE NCC164.138.224.0/21+ RegisteredApparent reissuance
2012-03-20RIPE NCC164.138.232.0/21+ RegisteredApparent reissuance
2012-03-20RIPE NCC164.138.240.0/21+ RegisteredApparent reissuance
2012-03-20RIPE NCC164.138.248.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.32.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.40.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.48.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.56.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.64.0/20+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.80.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.88.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.96.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.104.0/21+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.112.0/20+ RegisteredApparent reissuance
2012-03-19RIPE NCC164.138.128.0/18+ RegisteredApparent reissuance
2012-03-16RIPE NCC164.138.0.0/20+ RegisteredApparent reissuance
2012-03-16RIPE NCC164.138.16.0/21+ RegisteredApparent reissuance
2012-03-16RIPE NCC164.138.24.0/21+ RegisteredApparent reissuance

Transfer records (10)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer164.138.80.0/21 Boundless Networks Limited RIPE NCCQuickline Communications Limited RIPE NCC
RIPE NCCResource transfer164.138.0.0/20 ProstoDNS Ltd. RIPE NCCNameto Oy RIPE NCC
RIPE NCCResource transfer164.138.224.0/21 Sleek Networks Ltd RIPE NCCRackspace Ltd. RIPE NCC
RIPE NCCMerger acquisition164.138.192.0/21 netgo Aachen GmbH RIPE NCCnetgo tax GmbH RIPE NCC
RIPE NCCMerger acquisition164.138.200.0/21 DESARROLLO Y SISTEMAS INFORMATICOS CANARIAS SL RIPE NCCDESARROLLO Y SISTEMAS INFORMATICOS CANARIAS SL RIPE NCC
RIPE NCCResource transfer164.138.64.0/20 Scibile Network SA RIPE NCCHCL Technologies B.V. RIPE NCC
RIPE NCCResource transfer164.138.96.0/22 Limited Liability Company "LUCKY PLAY" RIPE NCCClasswire Limited RIPE NCC
RIPE NCCResource transfer164.138.100.0/22 FLOW Commerce Ltd RIPE NCCOOO "Network of data-centers "Selectel" RIPE NCC
RIPE NCCResource transfer164.138.40.0/21 Aksoran LLP RIPE NCCKcell JSC RIPE NCC
RIPE NCCResource transfer164.138.128.0/18 NETSERV CONSULT SRL RIPE NCCMobile Communication Company of Iran PLC RIPE NCC

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/164.138.0.0-164.138.255.255.json