rirtracker

IPv4 range · 1,024 addresses

205.153.208.0/22

Now

ARIN statistics
Allocated (dated 2015-04-14) (US), in the latest file
Registry
ARIN
Holder
SPX Corporation
From
ARIN's latest statistics and the latest transfer record

Latest change

Transfer log Merger/acquisition or reorganization

Reported
2022-09-13 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (5)

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.

2022-09-13 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: SPX FLOW TECHNOLOGY SYSTEMS, INC. (ARIN) to SPX Corporation (ARIN)
From
SPX FLOW TECHNOLOGY SYSTEMS, INC. ARIN
To
SPX Corporation ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from SPX FLOW TECHNOLOGY SYSTEMS, INC. (ARIN) to SPX Corporation (ARIN) on 2022-09-13 19:49 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 2022-09-13 19:49 UTC, SPX FLOW TECHNOLOGY SYSTEMS, INC. (ARIN) to SPX Corporation (ARIN); resources moved: 205.153.208.0/22 source · retrieved
  2. Before ARIN delegated statistics 2022-09-12 (produced 2022-09-12T13:00:10+00:00), before the report: allocated (dated 2015-04-14) source · retrieved
  3. After ARIN delegated statistics 2022-09-14 (produced 2022-09-14T13:00:11+00:00), after the report: allocated (dated 2015-04-14) source · retrieved
2015-04-14 ARIN + Add Apparent reissuance of previously removed resource Strong inference
ARIN-Issued
Add 205.153.208.0-205.153.211.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2015-04-13 and assigned (dated 2015-04-14) on 2015-04-15. The tracker saw this range released from hold on 2010-03-01 (205.153.208.0-205.153.211.255), 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 2015-04-14: "Add 205.153.208.0-205.153.211.255" source · retrieved
  2. Before ARIN delegated statistics 2015-04-13 (produced 2015-04-13T05:04:17+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2015-04-15 (produced 2015-04-15T05:04:15+00:00), after the report: assigned (dated 2015-04-14) 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 reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2015-04-14 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 205.153.208.0-205.153.211.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2015-04-13 and assigned (dated 2015-04-14) on 2015-04-15. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.153.208.0-205.153.211.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2015-04-14: "Remove 205.153.208.0-205.153.211.255" source · retrieved
  2. Before ARIN delegated statistics 2015-04-13 (produced 2015-04-13T05:04:17+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2015-04-15 (produced 2015-04-15T05:04:15+00:00), after the report: assigned (dated 2015-04-14) 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
2010-03-01 ARIN − Remove Unresolved change Observed only
ARIN-Issued
Remove 205.153.208.0-205.153.211.255
Inventory
Inventory effect unknown

ARIN-Issued says "Remove", but ARIN's statistics show it not issued on 2010-02-28 and not issued on 2010-03-02. (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 2010-03-01: "Remove 205.153.208.0-205.153.211.255" source · retrieved
  2. Before ARIN delegated statistics 2010-02-28, before the report: not issued source · retrieved
  3. After ARIN delegated statistics 2010-03-02, 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
2009-02-26 ARIN Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2009-04-27. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 0000-00-00) on 2009-02-25 and not issued on 2009-02-27. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2009-04-27. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 205.153.208.0/22 assigned on 2009-02-26, not listed on 2009-02-27 source · retrieved
  2. Before ARIN delegated statistics 2009-02-25, before the report: assigned (dated 0000-00-00) source · retrieved
  3. After ARIN delegated statistics 2009-02-27, after the report: not issued source · retrieved
Classification history for this change (4 versions)
  1. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
  2. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
  3. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
  4. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current

Transfer records (1)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition205.153.208.0/22 SPX FLOW TECHNOLOGY SYSTEMS, INC. ARINSPX Corporation 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/205.153.208.0-205.153.211.255.json