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Data as of Nov 3, 2026

154.56.112.0/24

Anonymizer · ISP proxy

Cogent Communications, LLC

Announcement
this exact prefix
RPKI invalid (origin)
Announced by
AS174
Type
ISP proxy
Risk
90 / 100 · Critical
Recent change
New origin Oct 31, 2026
from AS21859 Zenlayer Inc
IPv4 market

Path

Announced by AS174 since Oct 31, 2026 · 3 days ago
1 · Holder
Cogent Communications, LLC
record created Feb 5, 1992
2 · Leased from
not leased
3 · Announced by
AS174 Cogent Communications, LLC
since Oct 31, 2026 · 3 days ago
4 · Use
ISP proxy
anonymizer space, operator not named

Lineage

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

154.56.112.0/24

From the registry to its use

  1. Feb 5, 1992
    Registry record
    Cogent Communications, LLC
    Direct Allocation (legacy, pre-1997)
    154.56.0.0/16
  2. May 9, 2005– Nov 2, 2026
    Announced
    AS174 Cogent Communications, LLC
    as part of 154.48.0.0/12
    154.48.0.0/12
  3. Jun 12, 2026– Oct 30, 2026
    Announced
    AS21859 Zenlayer Inc
    Hosting
  4. Jun 17, 2026
    Route object
    AS21859 Zenlayer Inc
    ARIN route object for AS21859 Zenlayer Inc, maintainer MNT-COGC
  5. Oct 31, 2026– Nov 2, 2026
    Announced
    AS174 Cogent Communications, LLC
    Internet provider

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesOperatorProxy exitsRPKI
154.48.0.0/12
since May 2005
AS174Internet provider9,9840.95%ISP proxyProxy providerssold by Oxylabs, QuarkIP12,673
2,353 always on

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS174

US
Name
Cogent Communications, LLC
Type
Internet provider
Registered
May 16, 1996
Domain
cogentco.com
Website
www.cogentco.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
1,658