Data as of Nov 11, 2026

37.157.0.0/21

No anonymizer space · no proxy exits in 30 days

Adform A/S

Announcement
this exact prefix
RPKI valid
Announced by
Type
Business

Announcements

More specific

Announcements inside

PrefixOriginTypeHolderRPKI
37.157.2.0/23
since Oct 2015
AS198622BusinessAdform A/S
37.157.2.0/24
since Nov 2017
AS198622BusinessAdform A/S
37.157.4.0/23
since Aug 2016
AS198622BusinessAdform A/S
37.157.4.0/24
since Nov 2017
AS198622BusinessAdform A/S
37.157.6.0/23
since Aug 2016
AS198622BusinessAdform A/S
37.157.6.0/24
since Jun 2021
AS198622BusinessAdform A/S
37.157.7.0/24
since Dec 2017
AS198622BusinessAdform A/S

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
37.157.0.0/212,048DK-ADFORM-20120313Adform A/S (ORG-AA769-RIPE) · DKALLOCATED PAMar 13, 2012net-abuse@adform.com
└ 37.157.0.0/24256ADFORM-NETAdform Lithuania IPv4 NetworkASSIGNED PAMar 27, 2012net-abuse@adform.com
via DK-ADFORM-20120313
└ 37.157.1.0/24256ADFORM-NETPrimary DTC subnet 2ASSIGNED PAMar 27, 2012net-abuse@adform.com
via DK-ADFORM-20120313
└ 37.157.2.0/23512ADFORM-NETAdform Secondary DTC IPv4 NetworkASSIGNED PAMay 29, 2012net-abuse@adform.com
via DK-ADFORM-20120313
└ 37.157.4.0/23512ADFORM-NETAdform DTC IPv4 NetworkASSIGNED PASep 22, 2015net-abuse@adform.com
via DK-ADFORM-20120313
└ 37.157.6.0/23512ADFORM-NETAdform DTC IPv4 NetworkASSIGNED PASep 22, 2015net-abuse@adform.com
via DK-ADFORM-20120313

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

Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern
Stable
First seen
Nov 2015
Current origin since
Nov 2015 · 11 yr
Origin networks
1