rirtracker

IPv4 range · 4,096 addresses

101.1.16.0/20

Now

APNIC statistics
Allocated (dated 2026-10-21), allocated (dated 2026-10-22), allocated (dated 2026-10-23), assigned (dated 2026-10-21), assigned (dated 2026-10-22), assigned (dated 2026-10-23) (BD, HK, ID, IN, PG), in the latest file
Registry
APNIC
Holder
GlobalCache Technology Co., Ltd.
From
APNIC's latest statistics and the latest transfer record

Latest change

Released Released from hold (APNIC lists it as 'available')

Reported
2022-11-23 (APNIC)
Confidence
Strong inference
Inventory
APNIC's statistics now list it as 'available'; reissue not confirmed

Timeline (5)

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.

2022-11-23 APNIC Released Released from hold (APNIC lists it as 'available') Strong inference
Statistics
101.1.16.0/20 reserved on 2022-11-23, available on 2022-11-24
Inventory
APNIC's statistics now list it as 'available'; reissue not confirmed

APNIC's statistics show it reserved on 2022-11-23 and available on 2022-11-24. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2021-11-16, 372 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 101.1.16.0/20 reserved on 2022-11-23, available on 2022-11-24 source · retrieved
  2. Before APNIC delegated statistics 2022-11-23, before the change: reserved source · retrieved
  3. After APNIC delegated statistics 2022-11-24, after the change: available source · retrieved
Classification history for this change (4 versions)
  1. : Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.3.0)
  2. : Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.3.1)
  3. : Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.3.2)
  4. : Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.4.0) current
2021-11-16 APNIC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
101.1.16.0/20 allocated on 2021-11-16, reserved on 2021-11-17
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2022-11-16. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2010-12-10) on 2021-11-16 and reserved on 2021-11-17. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned IPv4 space a year after the removal or later since 2014, so the tracker estimates the hold ends on 2022-11-16. That is what APNIC has done, not a rule it states. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 101.1.16.0/20 allocated on 2021-11-16, reserved on 2021-11-17 source · retrieved
  2. Before APNIC delegated statistics 2021-11-16, before the change: allocated (dated 2010-12-10) source · retrieved
  3. After APNIC delegated statistics 2021-11-17, after the change: 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
2021-02-19 APNIC Transfer log Intra-APNIC transfer Confirmed
Transfer log
Transfer: AS Data(Hong Kong)Limited (APNIC) to GlobalCache Technology Co., Ltd. (APNIC)
From
AS Data(Hong Kong)Limited APNIC
To
GlobalCache Technology Co., Ltd. APNIC
Inventory
No effect on APNIC applicant inventory

APNIC's transfer log records a transfer from AS Data(Hong Kong)Limited (APNIC) to GlobalCache Technology Co., Ltd. (APNIC) on 2021-02-19 01:31 UTC. The registration changed hands; it is not a new allocation from APNIC.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2021-02-19 01:31 UTC, AS Data(Hong Kong)Limited (APNIC) to GlobalCache Technology Co., Ltd. (APNIC); resources moved: 101.1.16.0/20 source · retrieved
  2. Before APNIC delegated statistics 2021-02-19, before the change: allocated (dated 2010-12-10) source · retrieved
  3. After APNIC delegated statistics 2021-02-20, after the change: allocated (dated 2010-12-10) source · retrieved
Classification history for this change (4 versions)
  1. : Intra-APNIC transfer, confirmed (classifier 1.3.0)
  2. : Intra-APNIC transfer, confirmed (classifier 1.3.1)
  3. : Intra-APNIC transfer, confirmed (classifier 1.3.2)
  4. : Intra-APNIC transfer, confirmed (classifier 1.4.0) current
2014-10-03 APNIC Transfer log Intra-APNIC transfer Confirmed
Transfer log
Transfer: Asia Data (Hong kong) Inc. Limited (APNIC) to AS Data(Hong Kong)Limited (APNIC)
From
Asia Data (Hong kong) Inc. Limited APNIC
To
AS Data(Hong Kong)Limited APNIC
Inventory
No effect on APNIC applicant inventory

APNIC's transfer log records a transfer from Asia Data (Hong kong) Inc. Limited (APNIC) to AS Data(Hong Kong)Limited (APNIC) on 2014-10-03 06:15 UTC. The registration changed hands; it is not a new allocation from APNIC.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2014-10-03 06:15 UTC, Asia Data (Hong kong) Inc. Limited (APNIC) to AS Data(Hong Kong)Limited (APNIC); resources moved: AS55298, AS132541, 43.243.176.0/22, 101.1.16.0/20, 103.245.208.0/22, 183.90.184.0/21 source · retrieved
  2. Before APNIC delegated statistics 2014-10-03, before the change: allocated (dated 2010-12-10) source · retrieved
  3. After APNIC delegated statistics 2014-10-04, after the change: allocated (dated 2010-12-10) source · retrieved
Classification history for this change (4 versions)
  1. : Intra-APNIC transfer, confirmed (classifier 1.3.0)
  2. : Intra-APNIC transfer, confirmed (classifier 1.3.1)
  3. : Intra-APNIC transfer, confirmed (classifier 1.3.2)
  4. : Intra-APNIC transfer, confirmed (classifier 1.4.0) current
2010-12-10 APNIC + Registered Unresolved change Observed only
Statistics
101.1.16.0/20 not listed on 2010-12-10, allocated on 2010-12-11
Inventory
Inventory effect unknown

No transfer record matches. APNIC's statistics show it not listed on 2010-12-10 and allocated (dated 2010-12-10) on 2010-12-11. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 101.1.16.0/20 not listed on 2010-12-10, allocated on 2010-12-11 source · retrieved
  2. Before APNIC delegated statistics 2010-12-10, before the change: not listed source · retrieved
  3. After APNIC delegated statistics 2010-12-11, after the change: allocated (dated 2010-12-10) source · retrieved
Classification history for this change (4 versions)
  1. : Unresolved change, observed only (classifier 1.3.0)
  2. : Unresolved change, observed only (classifier 1.3.1)
  3. : Unresolved change, observed only (classifier 1.3.2)
  4. : Unresolved change, observed only (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-10-23APNIC101.1.25.0/24+ RegisteredApparent reissuance
2026-10-23APNIC101.1.28.0/23+ RegisteredApparent reissuance
2026-10-23APNIC101.1.30.0/24+ RegisteredApparent reissuance
2026-10-23APNIC101.1.31.0/24+ RegisteredApparent reissuance
2026-10-22APNIC101.1.20.0/23+ RegisteredApparent reissuance
2026-10-22APNIC101.1.22.0/23+ RegisteredApparent reissuance
2026-10-22APNIC101.1.24.0/24+ RegisteredApparent reissuance
2026-10-22APNIC101.1.26.0/23+ RegisteredApparent reissuance
2026-10-21APNIC101.1.16.0/23+ RegisteredApparent reissuance
2026-10-21APNIC101.1.18.0/24+ RegisteredApparent reissuance
2026-10-21APNIC101.1.19.0/24+ RegisteredApparent reissuance

Transfer records (2)

Date (UTC)LogTypeRange movedFromTo
APNICResource transfer101.1.16.0/20 AS Data(Hong Kong)Limited APNICGlobalCache Technology Co., Ltd. APNIC
APNICResource transfer101.1.16.0/20 Asia Data (Hong kong) Inc. Limited APNICAS Data(Hong Kong)Limited APNIC

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/101.1.16.0-101.1.31.255.json