Data as of Nov 14, 2026

173.211.40.0/24

No anonymizer space · no proxy exits in 30 days

HOSTKEY · space held by Colocation America Corporation

Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
IPv4 market

Path

1 · Holder
record created Oct 5, 2009 · reallocated to Internet Utilities NA LLC Jan 7, 2025
2 · Leased from
3 · Announced by
AS395839 HOSTKEY
since Mar 2024 · 2.7 yr ago
4 · Use
Hosting

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

173.211.40.0/24

From the registry to its use

  1. Oct 5, 2009
    Registry record
    Colocation America Corporation
    Direct Allocation
    173.211.0.0/17
  2. May 15, 2010– Apr 15, 2011
    Announced
    AS4436 GTT Americas, LLC
    as part of 173.211.0.0/17
    173.211.0.0/17
  3. Aug 1, 2011– today
    Announced
    AS21769 Colocation America Corporation
    as part of 173.211.0.0/17
    173.211.0.0/17
  4. Mar 6, 2024– Mar 17, 2024
    Announced
    AS834 IPXO LLC
    Hosting
  5. Mar 6, 2024– today
    Announced
    AS395839 HOSTKEY
    Hosting
  6. Jan 7, 2025
    Reallocated
    Internet Utilities NA LLC
    Reallocated
    173.211.40.0/24
  7. May 12, 2025
    Route object
    IPXO
    ARIN route object for AS395839 HOSTKEY, maintainer MNT-DCL-577
  8. May 12, 2025
    Route object
    IPXO
    RADB route object for AS395839 HOSTKEY, maintainer MAINT-AS834
  9. today
    Leased from
    IPXO
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromHolderRPKI
173.211.0.0/17
since Aug 2011
AS21769HostingIP broker IPXO (part)Colocation America Corporation

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
173.211.0.0/1732,768CAC-BLOCK7Colocation America Corporation (CAC-89) · USDirect AllocationOct 5, 2009Abuse@colocationamerica.com
└ 173.211.40.0/24256IPXOIPXO LLC (IL-845) · USReallocatedMar 5, 2024abuse@ipxo.com
└ 173.211.40.0/24256NETUTILSInternet Utilities NA LLC (DCL-577) · USReallocatedJan 7, 2025report@abuseradar.com
└ 173.211.40.0/24256NET-173-211-40-0-24unknownReassignedMay 12, 2025report@abuseradar.com
via IPXO

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

Routing timeline

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern
Rotating
First seen
Mar 2024
Current origin since
Mar 2024 · 2.7 yr
Origin networks
2
Last change of origin
Mar 2024
Recorded history

History

Handoffs
1