AS5538
Institute of Mathematics and Computer Science of University of Latvia
RIPE NCC LV active Announced
More ASNs in Latvia → Organization
Institute of Mathematics and Computer Science of University of Latvia
SigmaNet-NIC
Registered
Feb 05, 1996
30 years ago
IPv4 Prefixes
5
27,904 addresses
IPv6 Prefixes
2
524,288 × /48
BGP Neighbours
20
8 upstream/peer · 12 downstream · 1 collector-only
Registration
AS Number AS5538 AS Name SigmaNet-NIC Organization Institute of Mathematics and Computer Science of University of Latvia Organization ID ORG-IOMA1-RIPE Address Raina bulvaris 29, LV-1459, Riga, LATVIA Country Latvia (LV) Registry RIPE NCC Allocated Feb 05, 1996 Record Created Aug 22, 2002 Last Updated Jul 29, 2026 Status
active
WHOIS Server whois.ripe.net AS Description SigmaNet-NIC - Institute of Mathematics and Computer Science of University of Latvia, LV Remarks Riga, Latvia, SigmaNet,NIC DIRECT PEERS,IX, SigmaNet via GEANT, ACAD-NET, SigmaNet, NIC upstreams Abuse Email [email protected] Abuse Phone +371-67211241 IPv4 Prefixes
5 prefixes · 27,904 addresses Routing data as of 2026-10-06 08:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 5.152.224.0/21 | 5.152.224.0 – 5.152.231.255 | 2,048 |
| 85.254.192.0/18 | 85.254.192.0 – 85.254.255.255 | 16,384 |
| 92.240.64.0/19 | 92.240.64.0 – 92.240.95.255 | 8,192 |
| 185.23.160.0/22 | 185.23.160.0 – 185.23.163.255 | 1,024 |
| 194.8.1.0/24 | 194.8.1.0 – 194.8.1.255 | 256 |
IPv6 Prefixes
2 prefixes · 524,288 × /48 · 1 top-level Routing data as of 2026-10-06 08:00 UTC
| Prefix | Addresses |
|---|---|
| 2a02:500:: | 299 |
| 2a02:500:4000:: | 293 |
BGP Neighbours
20 unique neighbours · 8 upstream/peer · 12 downstream · 1 collector-only. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Networks seen to the left of this AS only when they peer directly with a RIPE RIS route collector, so the adjacency may be an artefact of that peering; many of them also appear on the downstream side. Upstream & peer side (8)
AS Name AS paths IPv4 sightings IPv6 sightings AS6939 HURRICANE - Hurricane Electric LLC 799 160 2,154 AS174 COGENT-174 - Cogent Communications, LLC 742 1,824 80 AS21320 GEANT_IAS_VRF GEANT Vereniging 411 714 434 AS8194 VITA VAS "Latvijas Valsts radio un televizijas centrs" 245 721 0 AS34073 ACAD-NET LR Izglitibas un zinatnes ministrija 199 312 91 AS20965 GEANT GEANT Vereniging 89 261 19 AS1257 SWIPNET - Tele2 Sverige AB 14 26 14 AS12578 APOLLO-AS SIA Tet 1 2 0 Downstream side (12)
AS Name AS paths IPv4 sightings IPv6 sightings AS29345 LUMII Institute of Mathematics and Computer Science of University of Latvia 479 708 360 AS199029 World-Registry-of-Internet-Domains-AS World Registry of Internet Domains LTD 260 1,003 0 AS199031 AmberBit SIA Amberbit 254 331 0 AS51955 NIC-LV-ANYCAST-AS Institute of Mathematics and Computer Science of University of Latvia 157 6 1,258 AS10906 AS10906 - Nucleo de Inf. e Coord. do Ponto BR - NIC.BR 146 4 191 AS34073 ACAD-NET LR Izglitibas un zinatnes ministrija 133 207 106 AS8605 LANET University of Latvia 94 30 136 AS44358 DOMREG-ANY-AS Kauno Technologijos Universitetas 29 13 21 AS29067 UATLD-AS LLC "Hostmaster" 16 1 24 AS8674 NETNOD-IX Netnod AB 4 2 8 AS42909 COMMUNITYDNS Community DNS Limited 2 4 0 AS25152 K-ROOT-SERVER Reseaux IP Europeens Network Coordination Centre (RIPE NCC) 1 0 2 Collector-only (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS28917 Fiord-AS Fiord Networks, UAB 9 3 28
Raw RDAP Response
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"events": [
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"eventDate": "2002-08-22T14:00:42Z"
},
{
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}
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"notices": [
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"title": "Filtered",
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},
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"description": [
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},
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"description": [
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],
"links": [
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"redacted": [
{
"name": {
"description": "Personal e-mail information"
},
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},
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},
{
"name": {
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"reason": {
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},
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},
{
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]
} Contact details of private individuals are redacted.