Data as of Nov 9, 2026
204.157.236.0/24
No anonymizer space · no proxy exits in 30 daysIronservers E.I.R.L · space held by Cogent Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 204.157.0.0/16 since Jun 2005 | AS174 | Internet provider | 5,298 1,623 always on | 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.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 204.157.0.0/16 | 65,536 | COGENT-204-157-16 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Sep 21, 1994 | abuse@ |
| └ 204.157.236.0/24 | 256 | MTL-CGNT-NET-1 | Mlink Telecom (MTL-380) · BR | Reallocated | Oct 25, 2023 | — |
Network & registry
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 204.
157. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Sep 21, 1994
- Legacy
- yes
- Reallocated to
- Mlink Telecom (MTL-380)
- Reallocated range
- 204.
157. 236. 0/ 24 - Reallocated
- Oct 25, 2023
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jan 2023
- Current origin since
- Aug 2025 · 1.3 yr
- Origin networks
- 3
- Last change of origin
- Aug 2025
Recorded history
History
- Handoffs
- 2
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS52511 | RADB | Route Registered for Cogent Communications Customer Proveedora de Telecomunicaciones Chile Ltda / INTERNET SATELITAL | MAINT-AS174 | Aug 5, 2025 |
| AS273659 not the origin | RADB | Route Registered for Cogent Communications Customer - M-Link Provedor de Internet | MAINT-AS174 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
157. 236. 0/ 24 - Netname
- MTL-CGNT-NET-1
- Registrant
- Mlink Telecom
- Organization
- Mlink Telecom (MTL-380)
- Org address
- R DONA MARIA CESAR, RECIFE, BR-PE, 50000000
- Org country
- BR
- Type
- Reallocated
- Handle
- NET-204-157-236-0-1
- Parent
- NET-204-157-0-0-1
- Created
- Oct 25, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 21, 1994
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN