Data as of Nov 12, 2026

37.19.4.0/24

No anonymizer space · no proxy exits in 30 days

SIS Laboratory, LLC

Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
37.19.0.0/21
since May 2025
AS198354Business5SIS Laboratory, 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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
37.19.0.0/212,048RU-SISTELECOM-20111221SIS Laboratory, LLC (ORG-SLL18-RIPE) · RUALLOCATED PADec 21, 2011public@sislab.ru
└ 37.19.4.0/24256SISLAB-GAMEINSIGHTunknownASSIGNED PAJul 25, 2017public@sislab.ru
via RU-SISTELECOM-20111221

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

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern
Stable
First seen
Mar 2012
Current origin since
Aug 2022 · 4.3 yr
Origin networks
2
Last change of origin
Apr 2012
Recorded history

History

Handoffs
1