Data as of Nov 12, 2026
154.52.0.0/20
No anonymizer space · no proxy exits in 30 daysCogent Communications, LLC
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 154.52.0.0/24 since Apr 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.1.0/24 since Mar 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.2.0/24 since Mar 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.3.0/24 since Mar 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.5.0/24 since Jul 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.6.0/24 since Apr 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.7.0/24 since Apr 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.8.0/24 since Apr 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.9.0/24 since Apr 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.10.0/24 since May 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.11.0/24 since May 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.12.0/24 since Jun 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.13.0/24 since Jun 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.14.0/24 since Jun 2021 | AS40934 | Business | Cogent Communications, LLC | |
| 154.52.15.0/24 since May 2021 | AS40934 | Business | Cogent Communications, LLC |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
4,096 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 3,840 | 94% | 15 | |
| Internet provider | 256 | 6.3% | 1 |
Network & registry
Announced by
Covering announcement 154.48.0.0/12
- Prefix
- 154.48.0.0/12
- Announced by
- AS174 Cogent Communications, LLC
- Type
- Internet provider
- Proxy exits
- 12,732
- Always-on exits
- 2,324
- RPKI
- No RPKI
- RIR
- ARIN
IPv4 market
Holder
- Organization
- Not stated by the 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
- 2,094
Routing timeline
Who has announced 154.48.0.0/12
154.48.0.0/12
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on 154.48.0.0/12
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS174 | RADB | Cogent | MAINT-AS174 | Nov 13, 2023 |
Whois
Registration for this announcement
154.48.0.0/12 spans several registrations: 249 records are listed under Registrations.
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 5, 1992
- Status
- assigned