Autonomous system
AS5538 SIGMANET-NIC
Education RIPE
Summary
SigmaNet (IMCS, University of Latvia)
education research legacy
SigmaNet-NIC is SigmaNet, Latvia's national research and education network, run by the Academic Network Laboratory of the Institute of Mathematics and Computer Science at the University of Latvia (IMCS UL) in Riga.
What it's used for
- Connecting Latvian universities, research institutes, and other academic bodies to each other and to the pan-European research network GÉANT.
- Supporting services for the academic community: hosting, e-mail, and data-centre resources.
Notable
- This is an NREN, so the address space serves institutions and researchers rather than paying consumers. Traffic patterns look like campus and research traffic, not eyeball broadband.
- IMCS UL is the umbrella for several pieces of Latvian internet infrastructure, operating publicly under the SigmaNet, CERT.LV, and domain-registry (NIC) brands. Address space here can therefore carry national-scale infrastructure roles as well as campus networking.
Interesting
- The network began operating in 1992 under the name LATNET, making it one of the first internet networks in the newly independent Baltic states. It was renamed SigmaNet in 2008.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Santa Monica Internet Local Exchange | Riga, Latvia | 195.246.227.159 |
Transit providers
7 upstream, 9 downstream and 27 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 17 prefixes · 18.43K addresses IPv6 23 prefixes
| Country | Name | Prefixes |
|---|---|---|
| LV | Latvia | 40 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS5538- Registry name
- SigmaNet-NIC
- Registrant
- lumii-mnt
- Abuse contact
- abuse@sigmanet.lv
- Registered
- 2002-08-22
- Last changed
- 2026-07-29
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 7 valid, 0 with no ROA
- ROAs
- 8 authorising AS5538
- ASPA
- no ASPA record
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 10 naming AS5538
Reputation
Classification and threat
Education University, school or national research and education network.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere