rirtracker

IPv4 range · 32,768 addresses

31.217.128.0/17

Now

RIPE NCC statistics
Allocated (dated 2011-08-11), allocated (dated 2011-08-17), allocated (dated 2011-08-18), allocated (dated 2021-07-30), allocated (dated 2021-08-02) (AT, AU, BH, DE, ES, FI, FR, GR, IE, IR, IT, KW, NL, 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
2011-08-08 (RIPE NCC)
Confidence
Strong inference
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

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.

2011-08-08 RIPE NCC Released Released from hold (the RIPE NCC lists it as 'available') Strong inference
Statistics
31.217.128.0/17 reserved on 2011-08-07, available on 2011-08-08
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

The RIPE NCC's statistics show it reserved on 2011-08-07 and available on 2011-08-08. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. 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: 31.217.128.0/17 reserved on 2011-08-07, available on 2011-08-08 source · retrieved
  2. Before RIPE NCC delegated statistics 2011-08-07 (produced 2011-08-07T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2011-08-08 (produced 2011-08-08T21:59:59+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

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2025-12-31RIPE NCC31.217.252.0/24Transfer logIntra-RIPE NCC transfer
2025-12-24RIPE NCC31.217.250.0/24Transfer logIntra-RIPE NCC transfer
2023-12-21RIPE NCC31.217.160.0/19Transfer logIntra-RIPE NCC transfer
2023-12-21RIPE NCC31.217.250.0/24Transfer logIntra-RIPE NCC transfer
2022-07-06RIPE NCC31.217.128.0/19Transfer logIntra-RIPE NCC transfer
2022-06-02RIPE NCC31.217.232.0/21Transfer logIntra-RIPE NCC transfer
2021-10-21RIPE NCC31.217.192.0/21Transfer logMerger/acquisition
2021-08-02RIPE NCC31.217.251.0/24+ RegisteredApparent reissuance
2021-08-02RIPE NCC31.217.252.0/24+ RegisteredApparent reissuance
2021-08-02RIPE NCC31.217.253.0/24+ RegisteredApparent reissuance
2021-08-02RIPE NCC31.217.254.0/24+ RegisteredApparent reissuance
2021-08-02RIPE NCC31.217.255.0/24+ RegisteredApparent reissuance
2021-07-30RIPE NCC31.217.248.0/24+ RegisteredApparent reissuance
2021-07-30RIPE NCC31.217.249.0/24+ RegisteredApparent reissuance
2021-07-30RIPE NCC31.217.250.0/24+ RegisteredApparent reissuance
2020-05-02RIPE NCC31.217.248.0/21ReleasedHold released
2019-11-04RIPE NCC31.217.248.0/22− DeregisteredRemoved
2019-11-04RIPE NCC31.217.252.0/22− DeregisteredRemoved
2018-06-13RIPE NCC31.217.248.0/22+ RegisteredApparent reissuance
2018-06-13RIPE NCC31.217.252.0/22+ RegisteredApparent reissuance
2016-08-18RIPE NCC31.217.208.0/21Transfer logIntra-RIPE NCC transfer
2016-06-15RIPE NCC31.217.248.0/21ReleasedHold released
2014-09-18RIPE NCC31.217.248.0/21− DeregisteredRemoved
2011-08-18RIPE NCC31.217.200.0/21+ RegisteredApparent new issuance
2011-08-18RIPE NCC31.217.208.0/21+ RegisteredApparent new issuance
2011-08-18RIPE NCC31.217.216.0/21+ RegisteredApparent new issuance
2011-08-18RIPE NCC31.217.224.0/21+ RegisteredApparent new issuance
2011-08-18RIPE NCC31.217.232.0/21+ RegisteredApparent new issuance
2011-08-18RIPE NCC31.217.240.0/21+ RegisteredApparent new issuance
2011-08-18RIPE NCC31.217.248.0/21+ RegisteredApparent new issuance
2011-08-17RIPE NCC31.217.160.0/19+ RegisteredApparent new issuance
2011-08-17RIPE NCC31.217.192.0/21+ RegisteredApparent new issuance
2011-08-11RIPE NCC31.217.128.0/19+ RegisteredApparent new issuance

Transfer records (8)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer31.217.252.0/24 LLC BIGNET UKRAINE RIPE NCCLLC "ATOM3" RIPE NCC
RIPE NCCResource transfer31.217.250.0/24 Xtudio Networks S.L.U. RIPE NCCXNET CORE SL RIPE NCC
RIPE NCCResource transfer31.217.160.0/19 Cosmote Mobile Telecommunications S.A. RIPE NCCOte SA (Hellenic Telecommunications Organisation) RIPE NCC
RIPE NCCResource transfer31.217.250.0/24 Julio Brasa Blanco RIPE NCCXtudio Networks S.L.U. RIPE NCC
RIPE NCCResource transfer31.217.128.0/19 IX Reach Ltd RIPE NCCBSO Network Solutions SAS RIPE NCC
RIPE NCCResource transfer31.217.232.0/21 SODIATECH SADCS RIPE NCCIMS Networks SAS RIPE NCC
RIPE NCCMerger acquisition31.217.192.0/21 Suomen Hostingpalvelu Oy RIPE NCCPlaneetta Internet Oy RIPE NCC
RIPE NCCResource transfer31.217.208.0/21 Peyk Navidsazan Farda Co. (Private Joint Stock) RIPE NCCTose'h Fanavari Ertebabat Pasargad Arian Co. PJS 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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