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.
2025-01-20APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Observed only
Statistics
121.93.0.0/17 allocated on 2025-01-20, not listed on 2025-01-21
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2026-01-20. 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 2006-07-12) on 2025-01-20 and not listed on 2025-01-21. Being gone from APNIC's statistics entirely can also mean it moved to another registry. 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 2026-01-20. That is what APNIC has done, not a rule it states. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 121.93.0.0/17 allocated on 2025-01-20, not listed on 2025-01-21source · retrieved
BeforeAPNIC delegated statistics 2025-01-20, before the change: allocated (dated 2006-07-12)source · retrieved
AfterAPNIC delegated statistics 2025-01-21, after the change: not listedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.4.0) current
2025-01-14APNICTransfer logInter-RIR transfer out of APNICConfirmed
Transfer log
Transfer: Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN)
121.92.0.0/15: the rest of the block stayed with the seller
Inventory
Transferred out of APNIC administration; not offered to APNIC applicants
APNIC's transfer log records a transfer from Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN) on 2025-01-14 00:27 UTC: it left APNIC for ARIN. It is not a new allocation and is not offered to APNIC applicants.
Evidence (3) · classifier 1.4.0,
Transfer logTransfer log: RESOURCE_TRANSFER on 2025-01-14 00:27 UTC, Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN); resources moved: 121.93.0.0/17source · retrieved
BeforeAPNIC delegated statistics 2025-01-14, before the change: allocated (dated 2006-07-12)source · retrieved
AfterAPNIC delegated statistics 2025-01-15, after the change: allocated (dated 2006-07-12)source · retrieved
Classification history for this change (4 versions)
: Inter-RIR transfer out of APNIC, confirmed (classifier 1.3.0)
: Inter-RIR transfer out of APNIC, confirmed (classifier 1.3.1)
: Inter-RIR transfer out of APNIC, confirmed (classifier 1.3.2)
: Inter-RIR transfer out of APNIC, confirmed (classifier 1.4.0) current
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.