rirtracker

IPv4 range · 2 prefixes · 49,152 addresses

157.250.64.0 - 157.250.255.255

157.250.64.0/18, 157.250.128.0/17

Now

ARIN statistics
Allocated (dated 2025-04-07) (only part of the range) (US), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

+ Add Range split/merge or reporting-format change

Reported
2012-09-07 (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.

2012-09-07 ARIN + Add Range split/merge or reporting-format change Strong inference
ARIN-Issued
Add 157.250.64.0-157.250.255.255
Inventory
No effect on ARIN applicant inventory

This range is part of a larger block from which a piece was transferred around 2012-09-07; the rest was re-registered to show the split. ARIN's statistics show it assigned (dated 1992-02-07) on 2012-09-06 and assigned (dated 2012-09-07) on 2012-09-08. (Until 2013-03-05, ARIN's statistics list only what's issued.)

Evidence (4) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2012-09-07: "Add 157.250.64.0-157.250.255.255" source · retrieved
  2. Before ARIN delegated statistics 2012-09-06, before the report: assigned (dated 1992-02-07) source · retrieved
  3. After ARIN delegated statistics 2012-09-08, after the report: assigned (dated 2012-09-07) source · retrieved
  4. Transfer log Transfer log: RESOURCE_TRANSFER on 2012-09-07 15:34 UTC, Arbella Mutual Ins. (ARIN) to OUTSCALE INC (ARIN); resources moved: 157.250.0.0/18 source · retrieved
Classification history for this change (4 versions)
  1. : Range split/merge or reporting-format change, strong inference (classifier 1.3.0)
  2. : Range split/merge or reporting-format change, strong inference (classifier 1.3.1)
  3. : Range split/merge or reporting-format change, strong inference (classifier 1.3.2)
  4. : Range split/merge or reporting-format change, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-10-01APNIC157.250.176.0/20Transfer logIntra-APNIC transfer
2026-06-29APNIC157.250.128.0/19Transfer logIntra-APNIC transfer
2025-04-08APNIC157.250.192.0/20Transfer logTransfer out of APNIC
2025-04-07ARIN157.250.192.0/20+ AddTransfer into ARIN
2024-04-23APNIC157.250.160.0/20Transfer logTransfer out of APNIC
2024-04-22RIPE NCC157.250.160.0/20Transfer logTransfer into the RIPE NCC
2021-07-02APNIC157.250.208.0/20Transfer logIntra-APNIC transfer
2020-07-20APNIC157.250.224.0/20Transfer logIntra-APNIC transfer
2017-06-29APNIC157.250.240.0/20Transfer logIntra-APNIC transfer
2013-04-22ARIN157.250.128.0/17Not in ARIN-IssuedTransfer out of ARIN
2013-04-19APNIC157.250.128.0/17Transfer logTransfer into APNIC
2013-01-22ARIN157.250.64.0/18Transfer logTransfer out of ARIN
2013-01-22APNIC157.250.64.0/18Transfer logTransfer into APNIC
2013-01-22ARIN157.250.128.0/17+ AddUnresolved

Transfer records (13)

Date (UTC)LogTypeRange movedFromTo
APNICResource transfer157.250.176.0/20 Rebyc Inc. APNICSpaceman Co. Ltd. APNIC
APNICResource transfer157.250.128.0/19 Rebyc Inc. APNICJapan Network Information Center/tdnc APNIC
APNICResource transfer157.250.192.0/20 Rebyc Inc. APNICINTER-83 ARIN
ARINResource transfer157.250.192.0/20 Rebyc Inc. APNICInterserver, Inc ARIN
APNICResource transfer157.250.160.0/20 Rebyc Inc. APNICORG-TA906-RIPE RIPE NCC
RIPE NCCResource transfer157.250.160.0/20 (no name given) APNICCibicom A/S RIPE NCC
APNICResource transfer157.250.208.0/20 Rebyc Inc. APNICJapan Network Information Center/qtnet APNIC
APNICResource transfer157.250.224.0/20 Rebyc Inc. APNICJapan Network Information Center/fitweb APNIC
APNICResource transfer157.250.240.0/20 Rebyc Inc. APNICJapan Network Information Center/catvwink APNIC
ARINResource transfer157.250.128.0/17 Arbella Mutual Ins. ARIN(no name given) APNIC
APNICResource transfer157.250.128.0/17 ArbellaMutualIns ARINElmedia Co.,Ltd. APNIC
ARINResource transfer157.250.64.0/18 OUTSCALE INC ARIN(no name given) APNIC
APNICResource transfer157.250.64.0/18 AMI-7 ARINWorkUP Inc. APNIC

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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