rirtracker

IPv4 range · 5 prefixes · 7,936 addresses

168.151.157.0 - 168.151.187.255

168.151.157.0/24, 168.151.158.0/23, 168.151.160.0/20, 168.151.176.0/21, 168.151.184.0/22

Now

ARIN statistics
Allocated (dated 1994-04-04), allocated (dated 2026-03-12), allocated (dated 2026-04-01), allocated (dated 2026-10-07) (US), in the latest file
Registry
ARIN
Holder
Not looked up
From
ARIN's latest statistics

Latest change

+ Add Registration or organization record change

Reported
2013-10-07 (ARIN)
Confidence
Strong inference
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.

2013-10-07 ARIN + Add Registration or organization record change Strong inference
ARIN-Issued
Add 168.151.157.0-168.151.187.255
Inventory
No effect on ARIN applicant inventory

No transfer record matches. ARIN's statistics show it assigned (dated 1994-04-04) on 2013-10-06 and assigned (dated 2013-10-07) on 2013-10-08. 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,
  1. ARIN-Issued ARIN-Issued report for 2013-10-07: "Add 168.151.157.0-168.151.187.255" source · retrieved
  2. Before ARIN delegated statistics 2013-10-06 (produced 2013-10-06T05:08:13+00:00), before the report: assigned (dated 1994-04-04) source · retrieved
  3. After ARIN delegated statistics 2013-10-08 (produced 2013-10-08T05:03:56+00:00), after the report: assigned (dated 2013-10-07) source · retrieved
Classification history for this change (4 versions)
  1. : Registration or organization record change, strong inference (classifier 1.3.0)
  2. : Registration or organization record change, strong inference (classifier 1.3.1)
  3. : Registration or organization record change, strong inference (classifier 1.3.2)
  4. : Registration or organization record change, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-10-07ARIN168.151.158.0/23+ AddIntra-ARIN transfer
2026-04-01ARIN168.151.160.0/20+ AddIntra-ARIN transfer
2026-03-12ARIN168.151.157.0/24+ AddIntra-ARIN transfer
2025-10-10ARIN168.151.157.0/24Transfer logMerger/acquisition
2025-10-10ARIN168.151.158.0/23Transfer logMerger/acquisition
2025-10-10ARIN168.151.160.0/20Transfer logMerger/acquisition
2025-10-10ARIN168.151.176.0/21Transfer logMerger/acquisition
2025-10-10ARIN168.151.184.0/22Transfer logMerger/acquisition

Transfer records (8)

Date (UTC)LogTypeRange movedFromTo
ARINResource transfer168.151.158.0/23 Big Sky Services, Inc. ARINCorvex, Inc. ARIN
ARINResource transfer168.151.160.0/20 Big Sky Services, Inc. ARINDryden Fiber ARIN
ARINResource transfer168.151.157.0/24 Big Sky Services, Inc. ARINClear Winds Technologies Incorporated ARIN
ARINMerger acquisition168.151.157.0/24 Intelligence Network, Inc. ARINBig Sky Services, Inc. ARIN
ARINMerger acquisition168.151.158.0/23 Intelligence Network, Inc. ARINBig Sky Services, Inc. ARIN
ARINMerger acquisition168.151.160.0/20 Intelligence Network, Inc. ARINBig Sky Services, Inc. ARIN
ARINMerger acquisition168.151.176.0/21 Intelligence Network, Inc. ARINBig Sky Services, Inc. ARIN
ARINMerger acquisition168.151.184.0/22 Intelligence Network, Inc. ARINBig Sky 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

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/168.151.157.0-168.151.187.255.json