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Data as of Nov 5, 2026

178.21.140.0/22

No anonymizer space · no proxy exits in 30 days

SerczerNET Malgorzata Nienaltowska

Announcement
178.21.136.0/21
RPKI valid
Announced by
AS197480
Type
Residential
Risk
0 / 100 · Low

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

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

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
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
4
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