AS42908 O2 Czech Republic, a.s. 🇨🇿 CZ

Announcing 44 prefixes, seen at the RIS collectors.

IPv4 prefixes

183,296 (716 × /24)

IPv6 prefixes

37 × /32

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS42908
Name: O2 Czech Republic, a.s.
Organisation: Nordic Telecom
Country: 🇨🇿 CZ
RIR: RIPENCC
Allocated: 2007-05-09
Scope: Not Disclosed
Peering policy: Open
IRR as-set: AS-NORDICTELECOM
Website: https://www.nordictelecom.cz/
PeeringDB: net/18184

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

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

Whois

Fetched from whois.ripe.net

as-block:       AS42383 - AS42953
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:        2026-06-23T05:12:23Z
last-modified:  2026-06-23T05:12:23Z
source:         RIPE

aut-num:        AS42908
admin-c:        VAKO1-RIPE
tech-c:         CZO2-RIPE
descr:          ORIGINAL AS CZ-NORDICTELECOMREGIONAL
as-name:        CZ-NORDICTELECOMREGIONAL
org:            ORG-STaN1-RIPE
remarks:        # Peering (Exchange)
import:         from AS6881 accept ANY
export:         to AS6881 announce AS-NORDICTELECOM
import:         from AS61195 accept ANY
export:         to AS61195 announce AS-NORDICTELECOM
remarks:        # Transit O2 NIX CDT
import:         from AS5610 accept ANY
export:         to AS5610 announce AS-NORDICTELECOM
import:         from AS8251 accept ANY
export:         to AS8251 announce AS-NORDICTELECOM
import:         from AS25512 accept ANY
export:         to AS25512 announce AS-NORDICTELECOM
remarks:        # DAT
remarks:        # OXID
import:         from AS35214 accept AS35214
export:         to AS35214 announce ANY
remarks:        # Fortech
remarks:        # Mitranet
remarks:        # Baja
remarks:        # Zenit
remarks:        # Omegatech
remarks:        # KeyNet
remarks:        # FofrNet
remarks:        # Customers
import:         from AS203385 accept AS203385
export:         to AS203385 announce ANY
import:         from AS202643 accept AS202643
export:         to AS202643 announce ANY
import:         from AS33442 accept AS33442
export:         to AS33442 announce ANY
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         AS5610-MTN
created:        2007-05-09T09:21:42Z
last-modified:  2025-04-01T07:33:41Z
source:         RIPE # Filtered

organisation:   ORG-STaN1-RIPE
org-name:       O2 Czech Republic, a.s.
country:        CZ
reg-nr:         60193336
org-type:       LIR
address:        Za Brumlovkou 266/2
address:        140 22
address:        Praha 4 - Michle
address:        CZECH REPUBLIC
phone:          +420 2 71466184
fax-no:         +420 2 71464414
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         CZO2-RIPE
abuse-c:        AR14410-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AS5610-MTN
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5610-MTN
created:        2004-04-17T11:04:17Z
last-modified:  2026-05-13T07:30:10Z
source:         RIPE # Filtered

role:           5610-Tech-and-Admin
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PSC 140 22
nic-hdl:        CZO2-RIPE
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         VAKO1-RIPE
tech-c:         HVJI1-RIPE
abuse-mailbox:  abuse@o2.cz
org:            ORG-STaN1-RIPE
mnt-by:         AS5610-MTN
created:        2016-02-18T09:58:30Z
last-modified:  2018-04-20T10:44:21Z
source:         RIPE # Filtered

person:         Vaclav Kordula
address:        O2 Czech Republic, a.s.
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PS? 140 22
address:        Czech Republic
phone:          +420 2 714668845
nic-hdl:        VAKO1-RIPE
mnt-by:         AS5610-MTN
created:        1970-01-01T00:00:00Z
last-modified:  2016-02-12T13:32:30Z
source:         RIPE # Filtered