206208 looking glass

AS5538 Institute of Mathematics and Computer Science of University of Latvia 🇱🇻 LV

Announcing 7 prefixes, seen at the RIS collectors.

IPv4 prefixes
5
27,904 (109 × /24)
IPv6 prefixes
2
8.1 × /32
Upstreams
5
transit providers observed
Peers
2
settlement-free adjacencies
Downstreams
7
transit customers observed
Customer cone
7
ASes reachable through it

Registry and operator data

AS number
AS5538
Name
Institute of Mathematics and Computer Science of University of Latvia
Organisation
Institute of Mathematics and Computer Science of University of Latvia
Country
🇱🇻 LV
RIR
RIPENCC
Allocated
1996-02-05

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

7 valid (100.0%) 0 invalid (0.0%) 0 no ROA (0.0%)

Whois

Fetched from whois.ripe.net

as-block:       AS5537 - AS5631
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:22Z
last-modified:  2018-11-22T15:27:22Z
source:         RIPE

aut-num:        AS5538
as-name:        SigmaNet-NIC
remarks:
remarks:        Riga, Latvia
org:            ORG-IOMA1-RIPE
remarks:
remarks:        SigmaNet,NIC DIRECT PEERS,IX
import:         from AS42480 accept AS-LIXLV
export:         to AS42480 announce AS-NIC
import:         from AS39626 accept AS-SMILE
export:         to AS39626 announce AS-NIC
import:         from AS6939 accept ANY
export:         to AS6939 announce AS-NIC
import:         from AS2588 accept ANY
export:         to AS2588 announce AS-NIC
remarks:
remarks:        SigmaNet via GEANT, ACAD-NET
import:         from AS20965 accept ANY
export:         to AS20965 announce AS-SigmaNet-Geant
import:         from AS21320 accept ANY
export:         to AS21320 announce AS-SigmaNet-Geant
import:         from AS34073 accept ANY
export:         to AS34073 announce AS-SigmaNet-Geant
remarks:
remarks:        SigmaNet, NIC upstreams
import:         from AS8194 accept ANY
export:         to AS8194 announce AS-NIC
import:         from AS174 accept ANY
export:         to AS174 announce AS-NIC
remarks:
admin-c:        LSaS2-RIPE
tech-c:         LSaS2-RIPE
remarks:
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         LUMII-MNT
created:        2002-08-22T14:00:42Z
last-modified:  2026-07-29T07:03:19Z
source:         RIPE

organisation:   ORG-IOMA1-RIPE
org-name:       Institute of Mathematics and Computer Science of University of Latvia
country:        LV
reg-nr:         Not Applicable
org-type:       LIR
address:        Raina bulvaris 29
address:        LV-1459
address:        Riga
address:        LATVIA
phone:          +37167211241
phone:          +37167085858
admin-c:        KS4171-RIPE
admin-c:        KA1288-RIPE
admin-c:        ML3644-RIPE
admin-c:        VT1051-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        lumii-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         lumii-mnt
abuse-c:        LSaS2-RIPE
created:        2007-07-24T10:11:05Z
last-modified:  2026-05-13T07:30:27Z
source:         RIPE # Filtered

role:           LUMII Services and Support
address:        Raina blvd. 29 RIGA
address:        SigmaNet
phone:          +371-67211241
mnt-by:         lumii-mnt
admin-c:        KA1288-RIPE
admin-c:        ML6499-RIPE
abuse-mailbox:  abuse@sigmanet.lv
tech-c:         ML6499-RIPE
tech-c:         MO8970-RIPE
nic-hdl:        LSaS2-RIPE
created:        2007-09-25T12:06:06Z
last-modified:  2026-06-17T13:16:07Z
source:         RIPE # Filtered