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Data as of Nov 5, 2026

178.21.136.0/21

20 residential-proxy exits · 30 days

SerczerNET Malgorzata Nienaltowska

Announcement
this exact prefix
RPKI valid
Announced by
AS197480
Type
Residential
Risk
0 / 100 · Low

Residential-proxy exits

Proxy exits
20
0.98% of its addresses · 30 days
Always-on exits
4
20% of its exits
Spread
4 of 8
/24s with at least one exit
Providers
51
selling exits here
Oct 6, 2026 – Nov 4, 2026

Exits seen per day

3.4K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
178.21.139.0/24210
178.21.138.0/2425
178.21.136.0/2403
178.21.137.0/2402

Proxy providers listing exits

  • 2Extract
  • 711Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BartProxies
  • BirdProxies
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • CatProxies
  • 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
  • VitalData
  • VitalExclusive

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
178.21.136.0/212,048PL-SERCZERNET-20100317SerczerNET Malgorzata Nienaltowska (ORG-SMN3-RIPE) · PLALLOCATED PAMar 17, 2010abuse@serczer.pl
└ 178.21.136.0/221,024PL-SERCZERNETSerczerNET Malgorzata Nienaltowska (ORG-SMN3-RIPE) · PLASSIGNED PAJul 28, 2010abuse@serczer.pl
└ 178.21.140.0/221,024PL-SERCZERNETSerczerNET Malgorzata Nienaltowska (ORG-SMN3-RIPE) · PLASSIGNED PASep 24, 2012abuse@serczer.pl

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
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