Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS5538

Announcement observedRIPE NCC

SigmaNet-NIC Institute of Mathematics and Computer Science of University of Latvia · SigmaNet-NIC

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/16/2026, 00:00:00Snapshot expired

View network topology RDAP registration

ASN: AS5538
Registration country: Latvia
Name: SigmaNet-NIC Institute of Mathematics and Computer Science of University of Latvia
Abbreviation: SigmaNet-NIC
Registration date: 8/22/2002, 14:00:42
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
185.23.160.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	9/29/2026, 08:00:00	✓	×	Currently valid
194.8.1.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	9/29/2026, 08:00:00	✓	×	Currently valid
5.152.224.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	9/29/2026, 08:00:00	✓	×	Currently valid
85.254.192.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	9/29/2026, 08:00:00	✓	×	Currently valid
92.240.64.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	9/29/2026, 08:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: SigmaNet-NIC Institute of Mathematics and Computer Science of University of Latvia
RIR: RIPE NCC
Registration country: Latvia
Registration date: 8/22/2002, 14:00:42
Abuse contact: abuse@sigmanet.lv

Snapshot trend

9/29/2026, 13:02:215 v42 v67 Upstream · 1 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn · iana-rdap-asn-bootstrap · cha-la-bgp-observations