AS21308 Synapse Ukraine LLC 🇺🇦 UA

Announcing 3 prefixes, seen at the RIS collectors.

IPv4 prefixes

512 (2 × /24)

IPv6 prefixes

1 × /48

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS21308
Name: Synapse Ukraine LLC
Organisation: Synapse Ukraine LLC
Country: 🇺🇦 UA
RIR: RIPENCC
Allocated: 2015-07-22

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 3 no ROA (100.0%)

Whois

Fetched from whois.ripe.net

as-block:       AS21281 - AS21390
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:        2018-11-22T15:27:28Z
last-modified:  2018-11-22T15:27:28Z
source:         RIPE

aut-num:        AS21308
as-name:        ITMUA-AS
org:            ORG-SUL41-RIPE
import:         from AS29107 accept ANY
export:         to AS29107 announce AS21308
sponsoring-org: ORG-LW50-RIPE
admin-c:        CHEG-RIPE
tech-c:         CHEG-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SYNAPSE-MNT
created:        2015-07-22T13:09:31Z
last-modified:  2026-04-16T09:48:16Z
source:         RIPE

organisation:   ORG-SUL41-RIPE
org-name:       Synapse Ukraine LLC
country:        UA
reg-nr:         31721222
org-type:       OTHER
address:        04112, Kyiv, Degtyarivska st 50
abuse-c:        ACRO57182-RIPE
mnt-ref:        ua-merezha-1-mnt
mnt-ref:        SYNAPSE-MNT
created:        2026-03-31T11:59:47Z
last-modified:  2026-05-13T06:29:41Z
source:         RIPE # Filtered
mnt-by:         ua-merezha-1-mnt
mnt-by:         SYNAPSE-MNT

person:         Eugen G.Chkolenko
address:        Synapse Network
address:        Degtyarivskaya str. 50
address:        Kiev, Ukraine, 04112
mnt-by:         SYNAPSE-MNT
phone:          +38(044)2406633
nic-hdl:        CHEG-RIPE
created:        2006-07-14T12:06:07Z
last-modified:  2010-05-22T21:17:30Z
source:         RIPE