rirtracker

IPv4 range · 65,536 addresses

216.238.0.0/16

Now

ARIN statistics
Allocated (dated 2010-12-08), allocated (dated 2011-02-10), allocated (dated 2011-02-14), allocated (dated 2011-02-15), allocated (dated 2019-01-04), allocated (dated 2019-01-15), allocated (dated 2019-02-06), allocated (dated 2021-03-04), allocated (dated 2025-07-01), allocated (dated 2025-07-02), reserved (CA, US), in the latest file
Registry
Not known
Holder
Not looked up

Latest change

− Remove Unresolved change

Reported
2010-12-02 (ARIN)
Confidence
Observed only
Inventory
Inventory effect unknown

Hold

Removed
2010-03-08 (ARIN)
Estimated hold end
2010-05-07 (from ARIN's published rule)

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.

2010-12-02 ARIN − Remove Unresolved change Observed only
ARIN-Issued
Remove 216.238.0.0-216.238.255.255
Inventory
Inventory effect unknown

ARIN-Issued says "Remove", but ARIN's statistics show it not issued on 2010-12-01 and not issued on 2010-12-03. (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 2010-12-02: "Remove 216.238.0.0-216.238.255.255" source · retrieved
  2. Before ARIN delegated statistics 2010-12-01, before the report: not issued source · retrieved
  3. After ARIN delegated statistics 2010-12-03, 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
2010-03-08 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 2010-05-07. 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 allocated (dated 1999-09-08) on 2010-03-07 and not issued on 2010-03-09. (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 2010-05-07. 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: 216.238.0.0/16 allocated on 2010-03-08, not listed on 2010-03-09 source · retrieved
  2. Before ARIN delegated statistics 2010-03-07, before the report: allocated (dated 1999-09-08) source · retrieved
  3. After ARIN delegated statistics 2010-03-09, 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

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-09-15ARIN216.238.32.0/22Transfer logMerger/acquisition
2026-04-22ARIN216.238.160.0/20Transfer logMerger/acquisition
2025-07-02ARIN216.238.36.0/22+ AddApparent reissuance
2025-07-02ARIN216.238.36.0/22− RemoveARIN pool record
2025-07-01ARIN216.238.32.0/22+ AddApparent reissuance
2025-07-01ARIN216.238.32.0/19− RemoveARIN pool record
2025-07-01ARIN216.238.40.0/22+ AddApparent reissuance
2025-07-01ARIN216.238.44.0/22+ AddApparent reissuance
2025-07-01ARIN216.238.48.0/22+ AddApparent reissuance
2025-07-01ARIN216.238.52.0/22+ AddApparent reissuance
2025-07-01ARIN216.238.56.0/22+ AddApparent reissuance
2025-07-01ARIN216.238.60.0/22+ AddApparent reissuance
2024-01-19ARIN216.238.224.0/20Transfer logMerger/acquisition
2022-04-11ARIN216.238.32.0/19Not in ARIN-IssuedRemoved
2022-03-01ARIN216.238.144.0/20Transfer logMerger/acquisition
2021-10-27ARIN216.238.160.0/20Transfer logMerger/acquisition
2021-03-04ARIN216.238.64.0/18+ AddIntra-ARIN transfer
2020-09-24ARIN216.238.64.0/18Transfer logMerger/acquisition
2019-02-06ARIN216.238.188.0/22+ AddIntra-ARIN transfer
2019-01-15ARIN216.238.184.0/22+ AddIntra-ARIN transfer
2019-01-04ARIN216.238.176.0/21+ AddIntra-ARIN transfer
2014-10-14ARIN216.238.192.0/20Not in ARIN-IssuedRemoved
2011-08-17ARIN216.238.176.0/20+ AddApparent reissuance
2011-02-15ARIN216.238.240.0/20+ AddApparent reissuance
2011-02-14ARIN216.238.192.0/20+ AddApparent reissuance
2011-02-14ARIN216.238.208.0/20+ AddApparent reissuance
2011-02-14ARIN216.238.224.0/20+ AddApparent reissuance
2011-02-10ARIN216.238.128.0/20+ AddApparent reissuance
2011-02-10ARIN216.238.144.0/20+ AddApparent reissuance
2011-01-06ARIN216.238.64.0/18+ AddApparent reissuance
2011-01-04ARIN216.238.32.0/19+ AddApparent reissuance
2010-12-08ARIN216.238.0.0/20+ AddApparent reissuance
2010-12-08ARIN216.238.16.0/20+ AddApparent reissuance

Transfer records (10)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition216.238.32.0/22 Flypoint Broadband Ltd. ARINVianet Inc. ARIN
ARINMerger acquisition216.238.160.0/20 FirstLight Fiber, Inc. ARINFirstLight Networks, LLC ARIN
ARINMerger acquisition216.238.224.0/20 Corridor Communications, INC. ARINXplornet Communications Inc. ARIN
ARINMerger acquisition216.238.144.0/20 GoRack LLC ARINSBA Edge, LLC ARIN
ARINMerger acquisition216.238.160.0/20 TelJet ARINFirst Light Fiber ARIN
ARINResource transfer216.238.64.0/18 3SR LLC ARINThe Constant Company, LLC ARIN
ARINMerger acquisition216.238.64.0/18 Razor Inc. ARIN3SR LLC ARIN
ARINResource transfer216.238.188.0/22 CKS Management ARINEbates Inc. ARIN
ARINResource transfer216.238.184.0/22 CKS Management ARINEtheric Networks, Inc. ARIN
ARINResource transfer216.238.176.0/21 CKS Management ARINAuburn Essential Services 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/216.238.0.0-216.238.255.255.json