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.
No transfer record matches. ARIN's statistics show it allocated (dated 2010-04-14) on 2010-04-15 and allocated (dated 2010-04-16) on 2010-04-17. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registration was replaced with one for a different holder record, and public sources don't say why (a transfer not yet logged, a return and reissue, or an organization record change).
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2010-04-16: "Add 173.240.128.0-173.240.143.255"source · retrieved
BeforeARIN delegated statistics 2010-04-15, before the report: allocated (dated 2010-04-14)source · retrieved
AfterARIN delegated statistics 2010-04-17, after the report: allocated (dated 2010-04-16)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
2010-04-14ARIN+ AddApparent new issuanceStrong inference
ARIN-Issued
Add 173.240.128.0-173.240.143.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it not issued on 2010-04-13 and allocated (dated 2010-04-14) on 2010-04-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2010-04-14: "Add 173.240.128.0-173.240.143.255"source · retrieved
BeforeARIN delegated statistics 2010-04-13, before the report: not issuedsource · retrieved
AfterARIN delegated statistics 2010-04-15, after the report: allocated (dated 2010-04-14)source · retrieved
Classification history for this change (4 versions)
: Apparent new issuance, strong inference (classifier 1.3.0)
: Apparent new issuance, strong inference (classifier 1.3.1)
: Apparent new issuance, strong inference (classifier 1.3.2)
: Apparent new issuance, 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.