Data as of Nov 9, 2026
204.157.144.0/23
65 residential-proxy exits · 30 daysFlavio Fernando Costa · space held by Cogent Communications, LLC
Residential-proxy exits
Proxy exits
65
13% of its addresses · 30 days
Always-on exits
3
4.6% of its exits
Spread
2 of 2
/24s with at least one exit
Providers
63
selling exits here
Oct 10, 2026 – Nov 8, 2026
Exits seen per day
48K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 204.157.145.0/24 | 3 | 33 | |
| 204.157.144.0/24 | 0 | 32 |
Proxy providers listing exits
- 711Proxy
- 9Proxy
- Ake.net
- AnyIP
- B2Proxy
- BestProxy
- BirdProxies
- BottingTools
- BuyingProxy
- ByteProxies
- Byteful
- CliProxy
- DataImpulse
- Decodo
- EZProxies
- Evomi
- FlashProxy
- FlexyProxies
- FloppyData
- Geonode
- GloryCloud
- GoProxies
- GonzoProxy
- IPCola
- IPFly
- IPPeak
- IPRoyal
- Infatica
- InfiniteProxies
- KindProxy
- Kookey
- LemonBright
- MangoProxy
- Maskify
- NSocks
- NovaProxy
- Novada
- Oxylabs
- PrivateByte
- PrivateProxy
- Proxio
- Proxiware
- Proxy-Seller
- Proxy4U
- ProxyEmpire
- ProxyGeo
- ProxyRack
- ProxyWing
- Proxyma
- RainProxy
- RapidProxy
- RoamProxy
- RolaProxy
- Shifter
- Smartproxy
- StrikeProxy
- SwiftProxy
- TalorData
- Thordata
- ThunderProxy
- VitalExclusive
- Webshare
- YumiProxy
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 204.157.0.0/16 since Jun 2005 | AS174 | Internet provider | 5,285 1,628 always on | Cogent Communications, LLC |
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 204.157.144.0/24 since Mar 2024 | AS273586 | Residential | 32 | Cogent Communications, LLC | |
| 204.157.145.0/24 since Mar 2024 | AS273586 | Residential | 33 3 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@ |
| └ 204.157.144.0/23 | 512 | FFCJNTIES-CGNT-NET-1 | Flavio Fernando Costa / JF Net Telecomunicacoes, Informatica e Seguranca (C10335748) · BR | Reassigned | Oct 26, 2023 | abuse@ via COGENT-204-157-16 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
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
Origin network
AS273586
BR
- Name
- Flavio Fernando Costa
- Type
- Internet provider
- Registered
- Sep 19, 2022
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2024
- Current origin since
- Mar 2024 · 2.6 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS273586 | RADB | Route Registered for Cogent Communications Customer - FLAVIO FERNANDO COSTA / JF NET TELECOMUNICACOES, INFORMATICA E SEGURANCA | MAINT-AS174 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
157. 144. 0/ 23 - Netname
- FFCJNTIES-CGNT-NET-1
- Registrant
- Flavio Fernando Costa / JF Net Telecomunicacoes, Informatica e Seguranca
- Organization
- Flavio Fernando Costa / JF Net Telecomunicacoes, Informatica e Seguranca (C10335748)
- Type
- Reassigned
- Handle
- NET-204-157-144-0-1
- Parent
- NET-204-157-0-0-1
- Created
- Oct 26, 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