Data as of Nov 14, 2026

204.217.147.0/24

No anonymizer space · no proxy exits in 30 days

M247 Europe SRL · space held by Cogent Communications, LLC

Announcement
this exact prefix
No RPKI
Announced by
Type
Hosting
Risk
50 / 100 · Medium
IPv4 market

Path

1 · Holder
record created Dec 29, 1994 · reallocated to Aventice LLC Nov 26, 2021
2 · Leased from
3 · Announced by
AS9009 M247 Europe SRL
since Mar 2024 · 2.6 yr ago
4 · Use
Hosting

Lineage

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

204.217.147.0/24

From the registry to its use

  1. Dec 29, 1994
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    204.217.0.0/16
  2. May 9, 2005– today
    Announced
    AS174 Cogent Communications, LLC
    as part of 204.217.0.0/16
    204.217.0.0/16
  3. Nov 26, 2021
    Reallocated
    Aventice LLC
    Reallocated
    204.217.128.0/17
  4. Mar 30, 2024– today
    Announced
    AS9009 M247 Europe SRL
    Hosting
  5. Apr 4, 2024
    Route object
    AS9009 M247 Europe SRL
    RADB route object for AS9009 M247 Europe SRL, maintainer MAINT-AS9009
  6. today
    Leased from
    Aventice
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromHolderRPKI
204.217.0.0/16
since May 2005
AS174Internet providerIP broker Aventice (part)Cogent Communications, LLC

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
204.217.0.0/1665,536COGENT-204-217-16Cogent Communications, LLC (COGC) · USDirect AllocationDec 29, 1994abuse@cogentco.com
└ 204.217.128.0/1732,768NET-204-217-128-0-1Aventice LLC (AL-584) · USReallocatedNov 26, 2021abuse@aventice.com

Network & registry

Routing timeline

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern
Stable
First seen
Mar 2024
Current origin since
Mar 2024 · 2.6 yr
Origin networks
1