Data as of Nov 3, 2026
154.3.21.0/24
Anonymizer · ISP proxyCogent Communications, LLC
IPv4 market
Path
2 · Leased from
not leased
4 · Use
ISP proxy
anonymizer space, operator not named
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
154.3.21.0/24
From the registry to its use
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Anonymizer addresses | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 154.3.0.0/16 since Sep 2006 | AS174 | Internet provider | 1,0241.6%ISP proxy | 392 201 always on | Cogent Communications, LLC |
Network & registry
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
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2024
- Current origin since
- Jun 2024 · 2.4 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 154.3.0.0/16
- Netname
- COGENT-154-3-16
- Registrant
- Cogent Communications, LLC
- Organization
- Cogent Communications, LLC (COGC)
- Org address
- 2450 N Street NW, Washington, DC, 20037
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-154-3-0-0-1
- Parent
- NET-154-0-0-0-0
- Created
- Feb 5, 1992
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 5, 1992
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN