rirtracker

IPv4 range · 2,048 addresses

143.246.136.0/21

Now

ARIN statistics
Not listed on 2026-10-09
Registry
Not known
Holder
Not looked up

Latest change

Not in ARIN-Issued Unresolved change

Reported
2026-06-08
Confidence
Conflicting
Inventory
Inventory effect unknown

Timeline since 2026-01-01 (1)

2026-06-08 Not in ARIN-Issued Unresolved change Conflicting
Inventory
Inventory effect unknown

2 transfer records from around 2026-06-08 cover parts of this IPv4 range, and none of them matches the range exactly, so the tracker doesn't pick one. Queued for review.

Evidence (5) · classifier 1.0.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 143.246.136.0/21 allocated on 2026-06-08, not listed on 2026-06-09 source · retrieved
  2. Transfer log Transfer log: RESOURCE_TRANSFER on 2026-06-08 14:48 UTC, Muskingum University (ARIN) to Zappie Host LLC (RIPE NCC); resources moved: 143.246.136.0/22 source · retrieved
  3. Transfer log Transfer log: RESOURCE_TRANSFER on 2026-06-08 13:40 UTC, Muskingum University (ARIN) to iFog GmbH (RIPE NCC); resources moved: 143.246.140.0/22 source · retrieved
  4. Before ARIN delegated statistics 2026-06-07 (produced 2026-06-07T09:00:20+00:00), before the report: allocated (dated 1990-10-26) source · retrieved
  5. After ARIN delegated statistics 2026-06-09 (produced 2026-06-09T09:00:19+00:00), after the report: not listed source · retrieved

Transfer records (2)

Date (UTC)TypeRange movedFromTo
Resource transfer143.246.136.0/22 Muskingum University ARINZappie Host LLC RIPE NCC
Resource transfer143.246.140.0/22 Muskingum University ARINiFog GmbH RIPE NCC

Every record in ARIN's transfer log that moved any part of this IPv4 range, back to 2009.

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/143.246.136.0-143.246.143.255.json