rirtracker

ASN

AS397868

This network elsewhere: its routes on BGP Report

Now

ARIN statistics
Assigned (dated 2019-08-23) (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: AS397868 source · retrieved
  2. Before ARIN delegated statistics 2026-05-18 (produced 2026-05-18T13:00:40+00:00), before the report: assigned (dated 2019-08-23) source · retrieved
  3. After ARIN delegated statistics 2026-05-20 (produced 2026-05-20T13:00:40+00:00), after the report: assigned (dated 2019-08-23) source · retrieved
2023-08-09 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: WhiteHat Security, Inc. (ARIN) to Synopsys Inc. (ARIN)
From
WhiteHat Security, Inc. ARIN
To
Synopsys Inc. ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from WhiteHat Security, Inc. (ARIN) to Synopsys Inc. (ARIN) on 2023-08-09 22:10 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 2023-08-09 22:10 UTC, WhiteHat Security, Inc. (ARIN) to Synopsys Inc. (ARIN); resources moved: AS397868 source · retrieved
  2. Before ARIN delegated statistics 2023-08-08 (produced 2023-08-08T13:00:15+00:00), before the report: assigned (dated 2019-08-23) source · retrieved
  3. After ARIN delegated statistics 2023-08-10 (produced 2023-08-10T13:00:13+00:00), after the report: assigned (dated 2019-08-23) source · retrieved
2019-08-23 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add AS397868
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it available on 2019-08-22 and assigned (dated 2019-08-23) on 2019-08-24. 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 2019-08-23: "Add AS397868" source · retrieved
  2. Before ARIN delegated statistics 2019-08-22 (produced 2019-08-22T14:00:13+00:00), before the report: available source · retrieved
  3. After ARIN delegated statistics 2019-08-24 (produced 2019-08-24T14:00:13+00:00), after the report: assigned (dated 2019-08-23) 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 acquisitionAS397868 Synopsys Inc. ARINBlack Duck Software, Inc. ARIN
ARINMerger acquisitionAS397868 WhiteHat Security, Inc. ARINSynopsys Inc. ARIN

Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this ASN (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: asn/397868.json