rirtracker

IPv4 range · 1,024 addresses

143.203.176.0/22

Now

ARIN statistics
Allocated (dated 2026-10-19) (US), in the latest file
Registry
ARIN
Holder
WebMakr LLC WL-791
From
RDAP, looked up 2026-10-27 18:20 UTC

Latest change

+ Add Apparent reissuance of previously removed resource

Reported
2026-10-19 (ARIN)
Confidence
Strong inference
Inventory
Likely issued from ARIN-controlled inventory

Timeline (2)

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.

2026-10-19 ARIN + Add Apparent reissuance of previously removed resource Strong inference
ARIN-Issued
Add 143.203.176.0-143.203.179.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2026-10-18 and allocated (dated 2026-10-19) on 2026-10-20. The tracker saw this range released from hold on 2026-10-02 (143.203.128.0-143.203.191.255), so it appears to have been issued again from ARIN's pool.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2026-10-19: "Add 143.203.176.0-143.203.179.255" source · retrieved
  2. Before ARIN delegated statistics 2026-10-18 (produced 2026-10-18T13:00:21+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2026-10-20 (produced 2026-10-20T13:00:20+00:00), after the report: allocated (dated 2026-10-19) source · retrieved
2026-10-19 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 143.203.176.0-143.203.179.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2026-10-18 and allocated (dated 2026-10-19) on 2026-10-20. ARIN removed its own pool record for this range as part of issuing it: the same report adds 143.203.176.0-143.203.179.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2026-10-19: "Remove 143.203.176.0-143.203.179.255" source · retrieved
  2. Before ARIN delegated statistics 2026-10-18 (produced 2026-10-18T13:00:21+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2026-10-20 (produced 2026-10-20T13:00:20+00:00), after the report: allocated (dated 2026-10-19) source · retrieved

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-10-02ARIN143.203.128.0/18− RemoveARIN pool record
2025-06-23ARIN143.203.0.0/16Not in ARIN-IssuedRemoved

Transfer records

No transfer log has a transfer of any part of this IPv4 range.

RDAP lookups

Looked upWhyRegistryHandleOrganizationStatusLast changed
After 7 days ARINNET-143-203-176-0-1WebMakr LLC WL-791active2026-10-19
After 7 days ARINNET-143-203-176-0-1WebMakr LLC WL-791active2026-10-19
After 24 hours ARINNET-143-203-176-0-1WebMakr LLC WL-791active2026-10-19
After 24 hours ARINNET-143-203-176-0-1WebMakr LLC WL-791active2026-10-19
First seen ARINNET-143-203-176-0-1WebMakr LLC WL-791active2026-10-19
First seen ARINNET-143-203-176-0-1WebMakr LLC WL-791active2026-10-19

Organization-level details only; contact details are never kept. RDAP shows the registration when it was looked up, not in the past.

This page as data: ip/143.203.176.0-143.203.179.255.json