rirtracker

IPv4 range · 2,048 addresses

142.54.8.0/21

Now

ARIN statistics
Allocated (dated 2015-04-03) (US), in the latest file
Registry
ARIN
Holder
Saginaw ISD
From
ARIN's latest statistics and the latest transfer record

Latest change

Transfer log Merger/acquisition or reorganization

Reported
2018-06-01 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (4)

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.

2018-06-01 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: Midland County Educational Service Agency (ARIN) to Saginaw ISD (ARIN)
From
Midland County Educational Service Agency ARIN
To
Saginaw ISD ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from Midland County Educational Service Agency (ARIN) to Saginaw ISD (ARIN) on 2018-06-01 14:27 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: MERGER_ACQUISITION on 2018-06-01 14:27 UTC, Midland County Educational Service Agency (ARIN) to Saginaw ISD (ARIN); resources moved: 142.54.8.0/21 source · retrieved
  2. Before ARIN delegated statistics 2018-05-31 (produced 2018-05-31T05:00:22+00:00), before the report: assigned (dated 2015-04-03) source · retrieved
  3. After ARIN delegated statistics 2018-06-02 (produced 2018-06-02T05:00:21+00:00), after the report: assigned (dated 2015-04-03) source · retrieved
2015-04-03 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 142.54.8.0-142.54.15.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2015-04-02 and assigned (dated 2015-04-03) on 2015-04-04. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2015-04-03: "Add 142.54.8.0-142.54.15.255" source · retrieved
  2. Before ARIN delegated statistics 2015-04-02 (produced 2015-04-02T05:05:37+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2015-04-04 (produced 2015-04-04T05:05:23+00:00), after the report: assigned (dated 2015-04-03) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.1)
  3. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current
2015-04-03 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 142.54.8.0-142.54.15.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2015-04-02 and assigned (dated 2015-04-03) on 2015-04-04. ARIN removed its own pool record for this range as part of issuing it: the same report adds 142.54.8.0-142.54.15.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2015-04-03: "Remove 142.54.8.0-142.54.15.255" source · retrieved
  2. Before ARIN delegated statistics 2015-04-02 (produced 2015-04-02T05:05:37+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2015-04-04 (produced 2015-04-04T05:05:23+00:00), after the report: assigned (dated 2015-04-03) source · retrieved
Classification history for this change (4 versions)
  1. : Change to ARIN's own pool record, strong inference (classifier 1.3.0)
  2. : Change to ARIN's own pool record, strong inference (classifier 1.3.1)
  3. : Change to ARIN's own pool record, strong inference (classifier 1.3.2)
  4. : Change to ARIN's own pool record, strong inference (classifier 1.4.0) current
2011-03-28 ARIN − Remove Unresolved change Observed only
ARIN-Issued
Remove 142.54.8.0-142.54.15.255
Inventory
Inventory effect unknown

ARIN-Issued says "Remove", but ARIN's statistics show it not issued on 2011-03-27 and not issued on 2011-03-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2011-03-28: "Remove 142.54.8.0-142.54.15.255" source · retrieved
  2. Before ARIN delegated statistics 2011-03-27, before the report: not issued source · retrieved
  3. After ARIN delegated statistics 2011-03-29, after the report: not issued source · retrieved
Classification history for this change (4 versions)
  1. : Unresolved change, observed only (classifier 1.3.0)
  2. : Unresolved change, observed only (classifier 1.3.1)
  3. : Unresolved change, observed only (classifier 1.3.2)
  4. : Unresolved change, observed only (classifier 1.4.0) current

Transfer records (1)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition142.54.8.0/21 Midland County Educational Service Agency ARINSaginaw ISD 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/142.54.8.0-142.54.15.255.json