rirtracker

IPv6 range · 19,342,813,113,834,066,795,298,816 addresses

2620:121:e000::/44

Now

ARIN statistics
Allocated (dated 2015-07-30) (US), in the latest file
Registry
ARIN
Holder
Black Duck Software, Inc.
From
ARIN's latest statistics and the latest transfer record

Latest change

Transfer log Merger/acquisition or reorganization

Reported
2026-05-19 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (3)

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.

2026-05-19 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: Synopsys Inc. (ARIN) to Black Duck Software, Inc. (ARIN)
From
Synopsys Inc. ARIN
To
Black Duck Software, Inc. ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from Synopsys Inc. (ARIN) to Black Duck Software, Inc. (ARIN) on 2026-05-19 20:17 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: MERGER_ACQUISITION on 2026-05-19 20:17 UTC, Synopsys Inc. (ARIN) to Black Duck Software, Inc. (ARIN); resources moved: 2620:121:e000::/44 source · retrieved
  2. Before ARIN delegated statistics 2026-05-18 (produced 2026-05-18T13:00:40+00:00), before the report: allocated (dated 2015-07-30) source · retrieved
  3. After ARIN delegated statistics 2026-05-20 (produced 2026-05-20T13:00:40+00:00), after the report: allocated (dated 2015-07-30) source · retrieved
2018-04-03 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: Black Duck Software, Inc (ARIN) to Synopsys Inc. (ARIN)
From
Black Duck Software, Inc ARIN
To
Synopsys Inc. ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from Black Duck Software, Inc (ARIN) to Synopsys Inc. (ARIN) on 2018-04-03 14:02 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: MERGER_ACQUISITION on 2018-04-03 14:02 UTC, Black Duck Software, Inc (ARIN) to Synopsys Inc. (ARIN); resources moved: 2620:121:e000::/44 source · retrieved
  2. Before ARIN delegated statistics 2018-04-02 (produced 2018-04-02T05:11:56+00:00), before the report: assigned (dated 2015-07-30) source · retrieved
  3. After ARIN delegated statistics 2018-04-04 (produced 2018-04-04T05:11:48+00:00), after the report: assigned (dated 2015-07-30) source · retrieved
2015-07-30 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 2620:121:E000::-2620:121:E00F:FFFF:FFFF:FFFF:FFFF:FFFF
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it available on 2015-07-29 and assigned (dated 2015-07-30) on 2015-07-31. 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,
  1. ARIN-Issued ARIN-Issued report for 2015-07-30: "Add 2620:121:E000::-2620:121:E00F:FFFF:FFFF:FFFF:FFFF:FFFF" source · retrieved
  2. Before ARIN delegated statistics 2015-07-29 (produced 2015-07-29T05:05:23+00:00), before the report: available source · retrieved
  3. After ARIN delegated statistics 2015-07-31 (produced 2015-07-31T05:06:00+00:00), after the report: assigned (dated 2015-07-30) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent new issuance, strong inference (classifier 1.3.0)
  2. : Apparent new issuance, strong inference (classifier 1.3.1)
  3. : Apparent new issuance, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current

Transfer records (2)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition2620:121:e000::/44 Synopsys Inc. ARINBlack Duck Software, Inc. ARIN
ARINMerger acquisition2620:121:e000::/44 Black Duck Software, Inc ARINSynopsys Inc. ARIN

Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this IPv6 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/2620.121.e000..-2620.121.e00f.ffff.ffff.ffff.ffff.ffff.json