rirtracker

IPv4 range · 65,536 addresses

81.163.0.0/16

Now

RIPE NCC statistics
Allocated (6 records, dated 2011-08-23 to 2018-06-19), assigned (12 records, dated 2011-08-23 to 2012-09-11) (CH, DE, IR, LV, PL, RU, UA), in the latest file
Registry
RIPE NCC
Holder
Not looked up
From
The RIPE NCC's latest statistics

Latest change

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

Reported
2011-08-02 (RIPE NCC)
Confidence
Strong inference
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

Timeline (3)

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.

2011-08-02 RIPE NCC Released Released from hold (the RIPE NCC lists it as 'available') Strong inference
Statistics
81.163.0.0/16 reserved on 2011-08-01, available on 2011-08-02
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

The RIPE NCC's statistics show it reserved on 2011-08-01 and available on 2011-08-02. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2011-01-29, 185 days earlier. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 81.163.0.0/16 reserved on 2011-08-01, available on 2011-08-02 source · retrieved
  2. Before RIPE NCC delegated statistics 2011-08-01 (produced 2011-08-01T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2011-08-02 (produced 2011-08-02T21:59:59+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'), strong inference (classifier 1.3.0)
  2. : Released from hold (the RIPE NCC lists it as 'available'), strong inference (classifier 1.3.1)
  3. : Released from hold (the RIPE NCC lists it as 'available'), strong inference (classifier 1.3.2)
  4. : Released from hold (the RIPE NCC lists it as 'available'), strong inference (classifier 1.4.0) current
2011-01-29 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
81.163.0.0/16 assigned on 2011-01-28, available on 2011-01-29
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 2010-11-03) on 2011-01-28 and available on 2011-01-29. 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: 81.163.0.0/16 assigned on 2011-01-28, available on 2011-01-29 source · retrieved
  2. Before RIPE NCC delegated statistics 2011-01-28, before the change: assigned (dated 2010-11-03) source · retrieved
  3. After RIPE NCC delegated statistics 2011-01-29, 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
2010-11-04 RIPE NCC + Registered Apparent new issuance Strong inference
Statistics
81.163.0.0/16 available on 2010-11-03, assigned on 2010-11-04
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it available on 2010-11-03 and assigned (dated 2010-11-03) on 2010-11-04. It moved from the RIPE NCC's unissued pool to an active registration dated around that day, so it appears to be newly issued by the RIPE NCC.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 81.163.0.0/16 available on 2010-11-03, assigned on 2010-11-04 source · retrieved
  2. Before RIPE NCC delegated statistics 2010-11-03, before the change: available source · retrieved
  3. After RIPE NCC delegated statistics 2010-11-04, after the change: assigned (dated 2010-11-03) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent new issuance, strong inference (classifier 1.3.0)
  2. : Apparent new issuance, 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

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-03-18RIPE NCC81.163.64.0/21Transfer logIntra-RIPE NCC transfer
2025-11-04RIPE NCC81.163.72.0/21Transfer logMerger/acquisition
2022-11-21RIPE NCC81.163.8.0/21Transfer logIntra-RIPE NCC transfer
2019-01-17RIPE NCC81.163.16.0/20Transfer logIntra-RIPE NCC transfer
2018-12-11RIPE NCC81.163.96.0/20Transfer logMerger/acquisition
2018-06-19RIPE NCC81.163.192.0/22+ RegisteredApparent reissuance
2018-06-19RIPE NCC81.163.196.0/22+ RegisteredApparent reissuance
2018-02-13RIPE NCC81.163.64.0/21Transfer logMerger/acquisition
2017-03-21RIPE NCC81.163.128.0/19Transfer logIntra-RIPE NCC transfer
2016-07-13RIPE NCC81.163.192.0/21ReleasedHold released
2016-01-15RIPE NCC81.163.192.0/21− DeregisteredRemoved
2014-12-08RIPE NCC81.163.64.0/21Transfer logIntra-RIPE NCC transfer
2012-09-11RIPE NCC81.163.112.0/20+ RegisteredApparent reissuance
2012-09-10RIPE NCC81.163.112.0/20ReleasedHold released
2012-08-22RIPE NCC81.163.112.0/20− DeregisteredRemoved
2011-09-09RIPE NCC81.163.224.0/20+ RegisteredApparent reissuance
2011-09-09RIPE NCC81.163.240.0/20+ RegisteredApparent reissuance
2011-09-02RIPE NCC81.163.200.0/21+ RegisteredApparent reissuance
2011-09-02RIPE NCC81.163.208.0/20+ RegisteredApparent reissuance
2011-09-01RIPE NCC81.163.128.0/19+ RegisteredApparent reissuance
2011-09-01RIPE NCC81.163.160.0/19+ RegisteredApparent reissuance
2011-09-01RIPE NCC81.163.192.0/21+ RegisteredApparent reissuance
2011-08-30RIPE NCC81.163.88.0/21+ RegisteredApparent reissuance
2011-08-30RIPE NCC81.163.112.0/20+ RegisteredApparent reissuance
2011-08-29RIPE NCC81.163.80.0/21+ RegisteredApparent reissuance
2011-08-29RIPE NCC81.163.96.0/20+ RegisteredApparent reissuance
2011-08-26RIPE NCC81.163.72.0/21+ RegisteredApparent reissuance
2011-08-25RIPE NCC81.163.8.0/21+ RegisteredApparent reissuance
2011-08-25RIPE NCC81.163.64.0/21+ RegisteredApparent reissuance
2011-08-23RIPE NCC81.163.0.0/21+ RegisteredApparent reissuance
2011-08-23RIPE NCC81.163.16.0/20+ RegisteredApparent reissuance
2011-08-23RIPE NCC81.163.32.0/19+ RegisteredApparent reissuance

Transfer records (8)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer81.163.64.0/21 Artecom Ltd RIPE NCCAleksandr Naydenko RIPE NCC
RIPE NCCMerger acquisition81.163.72.0/21 NOVA SIA RIPE NCCSIA NETVISION RIPE NCC
RIPE NCCResource transfer81.163.8.0/21 Robert Gulbinowicz prowadzacym dzialanosc pod nazwa "LEASNET" Uslugi Komputerowe RIPE NCCFirma Tonetic Krzysztof Adamczyk RIPE NCC
RIPE NCCResource transfer81.163.16.0/20 Altagen JSC RIPE NCCOOO "Network of data-centers "Selectel" RIPE NCC
RIPE NCCMerger acquisition81.163.96.0/20 TeleNet Usolie-Sibirskoe Ltd. RIPE NCCJSC "ER-Telecom Holding" RIPE NCC
RIPE NCCMerger acquisition81.163.64.0/21 OOO LINKY RIPE NCCArtecom Ltd RIPE NCC
RIPE NCCResource transfer81.163.128.0/19 Didan Group LTD RIPE NCCLevel-Msk Ltd. RIPE NCC
RIPE NCCResource transfer81.163.64.0/21 TeleBum LLC RIPE NCCZAO LINKY 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.

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