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.
ARIN's transfer log records a transfer from WebStream llc (ARIN) to Censys, Inc. (ARIN) on 2026-10-21 12:13 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.
Evidence (4) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2026-10-21: "Add 216.181.120.0-216.181.120.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2026-10-21 12:13 UTC, WebStream llc (ARIN) to Censys, Inc. (ARIN); resources moved: 216.181.120.0/24source · retrieved
BeforeARIN delegated statistics 2026-10-20 (produced 2026-10-20T13:00:20+00:00), before the report: allocated (dated 2024-05-07)source · retrieved
AfterARIN delegated statistics 2026-10-22 (produced 2026-10-22T13:00:21+00:00), after the report: allocated (dated 2026-10-21)source · retrieved
ARIN's transfer log records a transfer from PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN) on 2024-05-07 21:35 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.
Evidence (4) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2024-05-07: "Add 216.181.120.0-216.181.120.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2024-05-07 21:35 UTC, PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN); resources moved: 216.181.120.0/24source · retrieved
BeforeARIN delegated statistics 2024-05-06 (produced 2024-05-06T13:00:47+00:00), before the report: allocated (dated 2000-05-24)source · retrieved
AfterARIN delegated statistics 2024-05-08 (produced 2024-05-08T13:00:47+00:00), after the report: allocated (dated 2024-05-07)source · retrieved
Classification history for this change (4 versions)
: Intra-ARIN transfer, confirmed (classifier 1.4.0) current
2017-05-23ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: Primus Telecommunications, Inc. (ARIN) to PTGi International Carrier Services, Inc. (ARIN)
From
Primus Telecommunications, Inc. ARIN
To
PTGi International Carrier Services, Inc. ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from Primus Telecommunications, Inc. (ARIN) to PTGi International Carrier Services, Inc. (ARIN) on 2017-05-23 20:05 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,
Transfer logTransfer log: MERGER_ACQUISITION on 2017-05-23 20:05 UTC, Primus Telecommunications, Inc. (ARIN) to PTGi International Carrier Services, Inc. (ARIN); resources moved: 216.181.120.0/24source · retrieved
BeforeARIN delegated statistics 2017-05-22 (produced 2017-05-22T05:09:48+00:00), before the report: allocated (dated 2000-05-24)source · retrieved
AfterARIN delegated statistics 2017-05-24 (produced 2017-05-24T05:10:46+00:00), after the report: allocated (dated 2000-05-24)source · retrieved
2013-07-29ARIN+ AddRegistration or organization record changeStrong inference
ARIN-Issued
Add 216.181.120.0-216.181.120.255
Inventory
No effect on ARIN applicant inventory
No transfer record matches. ARIN's statistics show it allocated (dated 2000-05-24) on 2013-07-28 and allocated (dated 2013-07-29) on 2013-07-30. The holder's record is the same before and after, so this is a change to the registration, not a change of holder.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2013-07-29: "Add 216.181.120.0-216.181.120.255"source · retrieved
BeforeARIN delegated statistics 2013-07-28 (produced 2013-07-28T05:05:35+00:00), before the report: allocated (dated 2000-05-24)source · retrieved
AfterARIN delegated statistics 2013-07-30 (produced 2013-07-30T05:05:26+00:00), after the report: allocated (dated 2013-07-29)source · retrieved
Classification history for this change (4 versions)
: Registration or organization record change, strong inference (classifier 1.3.0)
: Registration or organization record change, strong inference (classifier 1.3.1)
: Registration or organization record change, strong inference (classifier 1.3.2)
: Registration or organization record change, strong inference (classifier 1.4.0) current
Transfer records (3)
Date (UTC)
Log
Type
Range moved
From
To
ARIN
Resource transfer
216.181.120.0/24
WebStream llc ARIN
Censys, Inc. ARIN
ARIN
Resource transfer
216.181.120.0/24
PTGi International Carrier Services, Inc. ARIN
WebStream llc ARIN
ARIN
Merger acquisition
216.181.120.0/24
Primus Telecommunications, Inc. ARIN
PTGi International Carrier Services, Inc. ARIN
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
Looked up
Why
Registry
Handle
Organization
Status
Last changed
After 7 days
ARIN
NET-216-181-120-0-1
Censys, Inc. CENSY
active
2026-10-21
After 24 hours
ARIN
NET-216-181-120-0-1
Censys, Inc. CENSY
active
2026-10-21
First seen
ARIN
NET-216-181-120-0-1
Censys, Inc. CENSY
active
2026-10-21
Organization-level details only; contact details are never kept. RDAP shows the registration when it was looked up, not in the past.