rirtracker

IPv4 range · 8 prefixes · 617,472 addresses

166.170.0.0 - 166.179.107.255

166.170.0.0/15, 166.172.0.0/14, 166.176.0.0/15, 166.178.0.0/16, 166.179.0.0/18, 166.179.64.0/19, 166.179.96.0/21, 166.179.104.0/22

Now

ARIN statistics
Allocated (dated 2025-04-01) (US), in the latest file
Registry
ARIN
Holder
AT&T Enterprises, LLC
From
ARIN's latest statistics and the latest transfer record

Latest change

+ Add Intra-ARIN transfer

Reported
2025-04-01 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (1)

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.

2025-04-01 ARIN + Add Intra-ARIN transfer Confirmed
ARIN-Issued
Add 166.170.0.0-166.179.107.255
From
Wireless Data Service Provider Corporation ARIN
To
AT&T Enterprises, LLC ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a transfer from Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN), recorded as 8 transfer records that together cover exactly this range, on 2025-04-01 20:07 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.

Evidence (11) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2025-04-01: "Add 166.170.0.0-166.179.107.255" source · retrieved
  2. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.170.0.0/15 source · retrieved
  3. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.172.0.0/14 source · retrieved
  4. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.179.104.0/22 source · retrieved
  5. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.176.0.0/15 source · retrieved
  6. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.179.96.0/21 source · retrieved
  7. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.178.0.0/16 source · retrieved
  8. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.179.0.0/18 source · retrieved
  9. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-04-01 20:07 UTC, Wireless Data Service Provider Corporation (ARIN) to AT&T Enterprises, LLC (ARIN); resources moved: 166.179.64.0/19 source · retrieved
  10. Before ARIN delegated statistics 2025-03-31 (produced 2025-03-31T13:01:11+00:00), before the report: allocated (dated 1993-07-09) source · retrieved
  11. After ARIN delegated statistics 2025-04-02 (produced 2025-04-02T13:01:10+00:00), after the report: allocated (dated 2025-04-01) source · retrieved
Classification history for this change (4 versions)
  1. : Intra-ARIN transfer, confirmed (classifier 1.3.0)
  2. : Intra-ARIN transfer, confirmed (classifier 1.3.1)
  3. : Intra-ARIN transfer, confirmed (classifier 1.3.2)
  4. : Intra-ARIN transfer, confirmed (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2024-02-28ARIN166.128.0.0/9Transfer logMerger/acquisition

Transfer records (9)

Date (UTC)LogTypeRange movedFromTo
ARINResource transfer166.170.0.0/15 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINResource transfer166.172.0.0/14 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINResource transfer166.176.0.0/15 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINResource transfer166.178.0.0/16 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINResource transfer166.179.0.0/18 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINResource transfer166.179.64.0/19 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINResource transfer166.179.96.0/21 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINResource transfer166.179.104.0/22 Wireless Data Service Provider Corporation ARINAT&T Enterprises, LLC ARIN
ARINMerger acquisition166.128.0.0/9 Service Provider Corporation ARINWireless Data Service Provider Corporation 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

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.

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