Data as of Nov 11, 2026
178.21.136.0/22
20 residential-proxy exits · 30 daysSerczerNET Malgorzata Nienaltowska
Residential-proxy exits
Proxy exits
20
2.0% of its addresses · 30 days
Always-on exits
3
15% of its exits
Spread
4 of 4
/24s with at least one exit
Providers
51
selling exits here
Oct 12, 2026 – Nov 10, 2026
Exits seen per day
3.3K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 178.21.139.0/24 | 2 | 10 | |
| 178.21.138.0/24 | 1 | 5 | |
| 178.21.136.0/24 | 0 | 3 | |
| 178.21.137.0/24 | 0 | 2 |
Proxy providers listing exits
- 2Extract
- 711Proxy
- Ake.net
- AnyIP
- B2Proxy
- BartProxies
- BirdProxies
- BottingTools
- Bright Data
- ByteProxies
- Byteful
- CatProxies
- CliProxy
- DataImpulse
- EnigmaProxy
- Evomi
- FastProxy
- FlashProxy
- FlexyProxies
- FloppyData
- GSocks
- Geonode
- GloryCloud
- GonzoProxy
- HideProxy
- IPRoyal
- Infatica
- Kookey
- LemonBright
- LudaxProxy
- MangoProxy
- NodeProxy
- NovaProxy
- Novada
- ProxiesVision
- Proxiware
- Proxy-Seller
- Proxy4U
- ProxyEmpire
- ProxyGeo
- ProxyHat
- ProxyRack
- ProxyWing
- Proxyma
- RainProxy
- RapidProxy
- Shifter
- Thordata
- ThunderProxy
- VantageProxies
- VitalExclusive
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 178.21.136.0/21 | 2,048 | PL-SERCZERNET-20100317 | SerczerNET Malgorzata Nienaltowska (ORG-SMN3-RIPE) · PL | ALLOCATED PA | Mar 17, 2010 | abuse@ |
| └ 178.21.136.0/22 | 1,024 | PL-SERCZERNET | SerczerNET Malgorzata Nienaltowska (ORG-SMN3-RIPE) · PL | ASSIGNED PA | Jul 28, 2010 | abuse@ |
Network & registry
Announced by
Covering announcement 178.21.136.0/21
- Prefix
- 178.21.136.0/21
- Announced by
- AS197480 SerczerNET Malgorzata Nienaltowska
- Type
- Residential
- Proxy exits
- 20
- Always-on exits
- 3
- RPKI
- RPKI valid
- Netname
- PL-SERCZERNET-20100317
- Registrant
- SerczerNET Malgorzata Nienaltowska
- RIR
- RIPE NCC
Origin network
AS197480
PL
- Name
- SerczerNET Malgorzata Nienaltowska
- Type
- Internet provider
- Registered
- Dec 20, 2010
- Domain
- serczer.pl
- Website
- www.serczer.pl
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 178.21.136.0/21
178.21.136.0/21
Routing history
- Pattern
- Stable
- First seen
- Oct 2011
- Current origin since
- Oct 2011 · 15 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 178.21.136.0/21 | AS197480 | /21 | RIPE | RPKI valid |
IRR
Route objects on 178.21.136.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS197480 | RIPE | SERCZERNET-IP | SERCZERNET | Oct 6, 2011 |
Whois
Registration for this announcement
- Range
- 178.
21. 136. 0/ 21 - Netname
- PL-SERCZERNET-20100317
- Registrant
- SerczerNET Malgorzata Nienaltowska
- Registrant country
- PL
- Organization
- SerczerNET Malgorzata Nienaltowska (ORG-SMN3-RIPE)
- Org country
- PL
- Type
- ALLOCATED PA
- Created
- Mar 17, 2010
- Updated
- Jan 11, 2017
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- PL
- Delegated
- Mar 17, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
serczer. pl - Name
- abuse serczernet
- Handle
- AS29980-RIPE