Data as of Nov 7, 2026
204.183.80.0/20
No anonymizer space · no proxy exits in 30 daysCogent Communications, LLC
Announcement
this exact prefix
No RPKI
Announced by
Type
Internet provider
81% of it
Recent change
New origin May 2026
from AS6372 DCANet
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 204.180.0.0/14 since May 2024 | AS174 | Internet provider | Cogent Communications, LLC |
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 |
|---|---|---|---|---|
| 204.183.80.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.81.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.82.0/24 since May 2026 | AS174 | Residential | Cogent Communications, LLC | |
| 204.183.83.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.84.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.85.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.86.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.87.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.88.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.89.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.90.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.91.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.92.0/24 since May 2026 | AS174 | Residential | Cogent Communications, LLC | |
| 204.183.93.0/24 since May 2026 | AS174 | Residential | Cogent Communications, LLC | |
| 204.183.94.0/24 since May 2026 | AS174 | Internet provider | Cogent Communications, LLC | |
| 204.183.95.0/24 since May 2026 | AS174 | Internet provider | 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 | |
|---|---|---|---|---|
| Internet provider | 3,328 | 81% | 13 | |
| Residential | 768 | 19% | 3 |
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
- Rotating
- First seen
- May 2005
- Current origin since
- May 2026 · 5 mo
- Origin networks
- 2
- Last change of origin
- May 2026
Recorded history
History
- Handoffs
- 1
- Also announced by
- 6372
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS6372 not the origin | RADB | DCA Net | MAINT-AS27506 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
180. 0. 0/ 14 - Netname
- COGENT-204-180-0
- 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-204-180-0-0-1
- Parent
- NET-204-0-0-0-0
- Created
- Oct 18, 1994
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 18, 1994
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN