rirtracker

IPv4 range · 1,024 addresses

185.37.172.0/22

Now

RIPE NCC statistics
Reserved, in the latest file
Registry
RIPE NCC
Holder
Not known
From
RDAP, looked up 2026-10-21 18:19 UTC

Latest change

− Deregistered Removed (return, revocation or reclamation not publicly distinguishable)

Reported
2026-10-13 (RIPE NCC)
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

Hold

Removed
2026-10-13 (RIPE NCC)
Estimated hold end
2027-04-11 (from the RIPE NCC's published rule; or later while it's still routed)
Now
Possible reissue candidate; not confirmed available.

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.

2026-10-13 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
185.37.172.0/22 allocated on 2026-10-12, reserved on 2026-10-13
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-04-11. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. The tracker found it by comparing the RIPE NCC's daily statistics. The RIPE NCC's statistics show it allocated (dated 2013-10-14) on 2026-10-12 and reserved on 2026-10-13. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC holds returned, revoked and reclaimed IPv4 space for 180 days (six months), or longer while still routed, before reissuing it, so the estimated hold end is 2027-04-11. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 185.37.172.0/22 allocated on 2026-10-12, reserved on 2026-10-13 source · retrieved
  2. Before RIPE NCC delegated statistics 2026-10-12 (produced 2026-10-12T21:59:59+00:00), before the change: allocated (dated 2013-10-14) source · retrieved
  3. After RIPE NCC delegated statistics 2026-10-13 (produced 2026-10-13T21:59:59+00:00), after the change: reserved source · retrieved
2013-10-14 RIPE NCC + Registered Apparent reissuance of previously removed resource Strong inference
Statistics
185.37.172.0/22 available on 2013-10-13, allocated on 2013-10-14
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it available on 2013-10-13 and allocated (dated 2013-10-14) on 2013-10-14. The tracker saw this range removed from registration on 2012-07-11 (185.0.0.0/10), so it appears to have been issued again from the RIPE NCC's pool.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: 185.37.172.0/22 available on 2013-10-13, allocated on 2013-10-14 source · retrieved
  2. Before RIPE NCC delegated statistics 2013-10-13 (produced 2013-10-13T21:59:59+00:00), before the change: available source · retrieved
  3. After RIPE NCC delegated statistics 2013-10-14 (produced 2013-10-14T21:59:59+00:00), after the change: allocated (dated 2013-10-14) 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

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2012-07-11RIPE NCC185.0.0.0/10− DeregisteredRemoved
2011-03-01RIPE NCC185.0.0.0/10+ RegisteredUnresolved

Transfer records

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

RDAP lookups

Looked upWhyRegistryHandleOrganizationStatusLast changed
After 7 days RIPE NCC185.0.0.0/8administrative2002-06-25
After 24 hours RIPE NCC185.0.0.0/8administrative2002-06-25
First seen RIPE NCC185.0.0.0/8administrative2002-06-25

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

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