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.
2010-10-15RIPE NCC+ RegisteredUnresolved changeObserved only
Statistics
155.45.0.0/16 not listed on 2010-10-14, assigned on 2010-10-15
Inventory
Inventory effect unknown
No transfer record matches. The RIPE NCC's statistics show it not listed on 2010-10-14 and assigned (dated 2010-10-14) on 2010-10-16. It wasn't in the RIPE NCC's statistics before, so it wasn't the RIPE NCC's unissued inventory; it may have come from another registry in a transfer not yet in the log.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 155.45.0.0/16 not listed on 2010-10-14, assigned on 2010-10-15source · retrieved
BeforeRIPE NCC delegated statistics 2010-10-14, before the change: not listedsource · retrieved
AfterRIPE NCC delegated statistics 2010-10-16, after the change: assigned (dated 2010-10-14)source · retrieved
Classification history for this change (4 versions)
: Unresolved change, observed only (classifier 1.3.0)
: Unresolved change, observed only (classifier 1.3.1)
: Unresolved change, observed only (classifier 1.3.2)
: Unresolved change, observed only (classifier 1.4.0) current
2010-10-13ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2010-12-12. Possible reissue candidate after this date; not confirmed available.
Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1995-03-28) on 2010-10-12 and not issued on 2010-10-14. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2010-12-12. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: 155.45.0.0/16 assigned on 2010-10-13, not listed on 2010-10-14source · retrieved
BeforeARIN delegated statistics 2010-10-12, before the report: assigned (dated 1995-03-28)source · retrieved
AfterARIN delegated statistics 2010-10-14, after the report: not issuedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
Transfer records
No transfer log has a transfer of any part of this IPv4 range.
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.