AS25512 - CDT-AS - CD-Telematika a.s., CZ

Czech
AS Number
AS25512
AS Name
CDT-AS
Org Name
CD-Telematika a.s.
Country / Region
Czech
Registry

ripe

RegDate

Updated

2018-11-22T15:27:30Z

AS25512 Looking Glass
https://lg.cdt.cz
IPv4Prefixes

11

IPv6Prefixes

1

IPv4 NUMs

117,760

IPv6 NUMs(/64)

4,294,967,296

CIDR Description IP Num
81.19.32.0/20
IRR Valid
CD-Telematika a.s. 4096
82.117.128.0/19
IRR Valid
CD-Telematika a.s. 8192
82.202.64.0/18
IRR Valid
CD-Telematika a.s. 16384
85.13.64.0/18
IRR Valid
CD-Telematika a.s. 16384
85.184.16.0/20
IRR Valid
CD-Telematika a.s. 4096
89.203.128.0/17
IRR Valid
CD-Telematika a.s. 32768
131.117.192.0/21
IRR Valid
CD-Telematika a.s. 2048
185.134.0.0/22
IRR Valid
CD-Telematika a.s. 1024
195.146.96.0/19
IRR Valid
CD-Telematika a.s. 8192
212.11.96.0/19
IRR Valid
CD-Telematika a.s. 8192
213.235.128.0/18
IRR Valid
CD-Telematika a.s. 16384
CIDR Description IP NUMs(prefix /64)
2001:1a48::/32
IRR Valid
CD-Telematika a.s. 4294967296
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 42,496 17,179,869,184 IPv4 IPv4
AS57463 NetIX - NetIX Communications JSC, BG Bulgaria 256 0 IPv4 IPv4 IPv6 IPv6
AS1239 COGENT-1239 - Cogent Communications, LLC, US United States 0 210,729,631,744 IPv4 IPv4
AS6663 TTI-NET - Euroweb Romania S.R.L., RO Romania 39,680 6,442,450,944 IPv4 IPv4 IPv6 IPv6
AS8218 NEO-ASN - Zayo Infrastructure France SA, FR France 47,104 12,884,967,424 IPv4 IPv4 IPv6 IPv6
AS22356 Durand do Brasil Ltda, BR Brazil 25,856 4,294,967,296 IPv4 IPv4
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 20,992 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS32590 VALVE-CORPORATION - Valve Corporation, US United States 13,568 2,293,760 IPv4 IPv4 IPv6 IPv6
AS51184 FONIRA - Fonira Telekom GmbH, AT Austria 13,824 111,669,149,696 IPv4 IPv4 IPv6 IPv6
AS53062 GGNET TELECOMUNICACOES LTDA, BR Brazil 28,416 4,848,746,496 IPv4 IPv4
AS1299 TWELVE99 - Arelion Sweden AB, SE Sweden 411,392 77,326,778,368 IPv4 IPv4 IPv6 IPv6
AS1764 NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT Austria 84,736 236,223,463,424 IPv4 IPv4 IPv6 IPv6
AS33891 CORE-BACKBONE - Core-Backbone GmbH, DE Germany 0 0 IPv4 IPv4 IPv6 IPv6
AS60602 INOVARE-AS - Inovare-Prim SRL, MD Moldova 3,584 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS14840 BR.Digital Telecom, BR Brazil 72,960 14,010,613,760 IPv4 IPv4 IPv6 IPv6
AS40994 Alwyzon - Hohl IT e.U., AT Austria 5,632 38,654,705,664 IPv4 IPv4 IPv6 IPv6
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 116,992 356,753,080,320 IPv4 IPv4 IPv6 IPv6
AS174 COGENT-174 - Cogent Communications, LLC, US United States 36,233,472 215,834,689,537 IPv4 IPv4 IPv6 IPv6
AS6204 ZET-NET - INTERKVM HOST SRL, RO Romania 3,840 268,500,999 IPv4 IPv4
AS6461 ZAYO-6461 - Zayo Bandwidth, US United States 1,751,552 51,808,436,224 IPv4 IPv4 IPv6 IPv6
AS6939 HURRICANE - Hurricane Electric LLC, US United States 458,496 283,043,982,606,336 IPv4 IPv4 IPv6 IPv6
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS200355 CADCANET - CadcaNet plus s. r. o., SK Slovakia 1,024 0 IPv4 IPv4
AS51449 KTUO-AS - Kabelova televize Usti nad Orlici, spol. s r. o., CZ Czech 1,024 4,294,967,296 IPv6 IPv6
AS6881 NIXCZ - NIX.CZ z.s.p.o., CZ Czech 2,560 8,589,934,592 IPv4 IPv4 IPv6 IPv6
AS43507 RETE-AS - RETE internet, s.r.o., CZ Czech 8,192 0 IPv4 IPv4
AS43614 ECONOMIA-CZ - Economia a.s., CZ Czech 3,072 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS200828 THOSTING-AS - TERMS a.s., CZ Czech 1,024 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS197019 WEDOS - WEDOS Internet, a.s., CZ Czech 10,240 4,295,032,832 IPv6 IPv6
AS213387 TESUNET - TeSuNet s.r.o., CZ Czech 256 0 IPv4 IPv4
AS216450 prgaero - Letiste Praha, a. s., CZ Czech 1,024 0 IPv4 IPv4
AS60275 AS_RVTECH - RVTech s.r.o., CZ Czech 0 65,536 IPv6 IPv6
AS56717 RESAL-AS - OG Soft s.r.o., CZ Czech 256 65,536 IPv4 IPv4 IPv6 IPv6
AS3161 ASITPROFI - IT PROFI s.r.o., CZ Czech 512 0 IPv4 IPv4
AS48417 ITS-CZ - ITS akciova spolecnost, CZ Czech 4,608 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS50975 AVX_AS - KYOCERA AVX Components s.r.o., CZ Czech 2,048 0 IPv4 IPv4
AS51524 ASNETDELUXE - Ales Tesacek, CZ Czech 2,048 0 IPv4 IPv4
AS56450 ALBERON_AS - Alberon Letohrad s.r.o, CZ Czech 4,096 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS197550 ASINET4YOU - Internet4you.cz, spol. s r.o., CZ Czech 4,096 0 IPv4 IPv4
AS206159 cz-fresh - Fresh Data s.r.o., CZ Czech 256 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS20609 kazaczsro - KAZA.cz s.r.o., CZ Czech 2,048 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS20708 SKODA-AUTO - SKODA AUTO a.s., CZ Czech 1,280 65,536 IPv4 IPv4 IPv6 IPv6
AS47131 PH - PH, spol. s r. o., CZ Czech 2,048 0 IPv4 IPv4
AS47868 SUPRO-AS - AVONET, s.r.o., CZ Czech 4,096 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS51331 ModernTV - SychrovNET s.r.o, CZ Czech 1,536 50,331,648 IPv4 IPv4 IPv6 IPv6
AS56827 ASMIRNETCZ - mirnet s.r.o., CZ Czech 1,024 0 IPv4 IPv4

Peers at this Exchange Point

Country / Region IX IPv4 IPv6 Port Speed Updated
Czech NIX.CZ - Neutral Internet Exchange in the Czech Republic 91.210.16.100 2001:7f8:14::1f:1 100 Gbps 2026-03-25 07:41:44
Slovakia NIX.SK - Neutral Internet eXchange Slovakia 194.30.187.100 2001:7f8:91::35:1 10 Gbps 2026-03-26 16:00:59
Czech NIX.CZ - Neutral Internet Exchange in the Czech Republic 91.210.16.101 2001:7f8:14::1f:2 100 Gbps 2026-03-25 07:41:44

Private Peering Facilities

Country / Region Name City Website Updated
CE Colo Prague Prague http://www.cecolo.com/ 2016-03-14 20:50:34
Sitel Bratislava Bratislava http://www.sitel.sk 2018-06-25 08:19:59

Whois Record

as-block AS25365 - AS25542

as-block
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
2018-11-22T15:27:30Z
last-modified
2018-11-22T15:27:30Z
source
RIPE

aut-num AS25512

aut-num
as-name
CDT-AS
descr
The Czech Republic
org
ORG-CTa3-RIPE
remarks
# TRANSIT
# Peering
# CUSTOMERS
End of list
import
from AS1299 accept ANY # TELIA
from AS174 accept ANY # COGENT
from AS6881 accept ANY # NIXCZ
from AS47200 accept ANY # NIX Routeservers
from AS47627 accept ANY # NIXSK Routeservers
from AS6881 accept ANY # NIX
from AS21241 accept ANY # MUZO
from AS34040 accept ANY # TTNET
from AS35046 accept ANY # Omega
from AS43507 accept ANY # RETE
from AS44424 accept ANY # MALL
from AS47767 accept ANY # RCO
from AS47868 accept ANY # SUPRO
from AS48417 accept ANY # ITS
from AS56450 accept ANY # ALBERON
from AS197550 accept ANY # INTERNET4YOU
from AS49101 accept ANY # KTCZ
from AS51524 accept ANY # ATESACEK
from AS56827 accept ANY # MIRNET SRO
from AS198403 accept ANY # MATRIGO
from AS56717 accept ANY # RESAL
from AS197698 accept ANY # D-H-T
from AS47131 accept ANY # PHSPOL
from AS43614 accept ANY # ECONOMIA
from AS56456 accept ANY # C2NET
from AS20708 accept ANY # SKODA AUTO a.s.
from AS62178 accept ANY # MASTER IT
from AS49488 accept ANY # TLD via NIX
from AS60275 accept ANY # RVTECH
from AS3161 accept ANY # IT Profi Vimperk
from AS20609 accept ANY # Kaza
from AS30738 accept ANY # Netart
from AS50975 accept ANY # AVX_AS
from AS62159 accept ANY # HAPPY Technik
from AS197019 accept ANY # Wedos
from AS200155 accept ANY # TCPISEK-CZ
from AS200355 accept ANY # CADCANET
from AS201457 accept ANY # KOOPERATIVA-AS
from AS42908 accept ANY # AS-NORDICTELECOM
from AS213387 accept ANY # TESUNET
from AS206159 accept ANY # Fresh Data
export
to AS1299 announce AS-CDT-NETWORKS
to AS174 announce AS-CDT-NETWORKS
to AS6881 announce AS-CDT-NETWORKS
to AS47200 announce ANY
to AS47627 announce ANY
to AS6881 announce ANY
to AS21241 announce ANY
to AS34040 announce ANY
to AS35046 announce ANY
to AS43507 announce ANY
to AS44424 announce ANY
to AS47767 announce ANY
to AS47868 announce ANY
to AS48417 announce ANY
to AS56450 announce ANY
to AS197550 announce ANY
to AS49101 announce ANY
to AS51524 announce ANY
to AS56827 announce ANY
to AS198403 announce ANY
to AS56717 announce ANY
to AS197698 announce ANY
to AS47131 announce ANY
to AS43614 announce ANY
to AS56456 announce ANY
to AS20708 announce ANY
to AS62178 announce ANY
to AS49488 announce ANY
to AS60275 announce ANY
to AS3161 announce ANY
to AS20609 announce ANY
to AS30738 announce ANY
to AS50975 announce ANY
to AS62159 announce ANY
to AS197019 announce ANY
to AS200155 announce ANY
to AS200355 announce ANY
to AS201457 announce ANY
to AS42908 announce ANY
to AS213387 announce ANY
to AS206159 announce ANY
admin-c
CDT-RIPE
tech-c
CDT-RIPE
status
ASSIGNED
mnt-by
RIPE-NCC-END-MNT
CDT-MNT
created
2002-12-17T14:28:40Z
last-modified
2025-07-29T11:30:12Z
source
RIPE

organisation ORG-CTa3-RIPE

organisation
ORG-CTa3-RIPE
org-name
CD-Telematika a.s.
country
CZ
reg-nr
61459445
org-type
LIR
address
Pernerova 2819/2a
130 00,
Praha 3
CZECH REPUBLIC
phone
+420210021695
fax-no
+420210021610
e-mail
ip@cdt.cz
admin-c
MS58623-RIPE
PL1116-RIPE
abuse-c
CDT-RIPE
mnt-ref
RIPE-NCC-HM-MNT
CDT-MNT
notify
abuse@cdt.cz
mnt-by
RIPE-NCC-HM-MNT
CDT-MNT
created
2004-04-17T11:04:09Z
last-modified
2026-05-13T07:18:28Z
source
RIPE

role CDT hostmaster

role
CDT hostmaster
address
CD-Telematika a.s.
Pod Taborem 6
Praha 9
191 00
The Czech Republic
phone
+420 210021 685
fax-no
+420 210021 699
e-mail
abuse@cdt.cz
remarks
--------------------------------------------------
abuse and spam reports please mail to abuse@cdt.cz
peering and technical communication
mail to ip(at)cdt.cz
--------------------------------------------------
admin-c
PL1116-RIPE
CJ167-RIPE
ZP642-RIPE
MS58623-RIPE
LP15291-RIPE
VP16243-RIPE
tech-c
PL1116-RIPE
CJ167-RIPE
ZP642-RIPE
MS58623-RIPE
LP15291-RIPE
VP16243-RIPE
abuse-mailbox
abuse@cdt.cz
nic-hdl
CDT-RIPE
mnt-by
CDT-MNT
created
2004-01-26T14:58:45Z
last-modified
2026-07-21T13:26:33Z
source
RIPE
 

as-block:       AS25365 - AS25542
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:        2018-11-22T15:27:30Z
last-modified:  2018-11-22T15:27:30Z
source:         RIPE



aut-num:        AS25512
as-name:        CDT-AS
descr:          The Czech Republic
org:            ORG-CTa3-RIPE
remarks:        # TRANSIT
import:         from AS1299 accept ANY # TELIA
export:         to AS1299 announce AS-CDT-NETWORKS
import:         from AS174 accept ANY # COGENT
export:         to AS174 announce AS-CDT-NETWORKS
remarks:        # Peering
import:         from AS6881 accept ANY # NIXCZ
export:         to AS6881 announce AS-CDT-NETWORKS
import:         from AS47200 accept ANY # NIX Routeservers
export:         to AS47200 announce ANY
import:         from AS47627 accept ANY # NIXSK Routeservers
export:         to AS47627 announce ANY
remarks:        # CUSTOMERS
import:         from AS6881 accept ANY # NIX
export:         to AS6881 announce ANY
import:         from AS21241 accept ANY # MUZO
export:         to AS21241 announce ANY
import:         from AS34040 accept ANY # TTNET
export:         to AS34040 announce ANY
import:         from AS35046 accept ANY # Omega
export:         to AS35046 announce ANY
import:         from AS43507 accept ANY # RETE
export:         to AS43507 announce ANY
import:         from AS44424 accept ANY # MALL
export:         to AS44424 announce ANY
import:         from AS47767 accept ANY # RCO
export:         to AS47767 announce ANY
import:         from AS47868 accept ANY # SUPRO
export:         to AS47868 announce ANY
import:         from AS48417 accept ANY # ITS
export:         to AS48417 announce ANY
import:         from AS56450 accept ANY # ALBERON
export:         to AS56450 announce ANY
import:         from AS197550 accept ANY # INTERNET4YOU
export:         to AS197550 announce ANY
import:         from AS49101 accept ANY # KTCZ
export:         to AS49101 announce ANY
import:         from AS51524 accept ANY # ATESACEK
export:         to AS51524 announce ANY
import:         from AS56827 accept ANY # MIRNET SRO
export:         to AS56827 announce ANY
import:         from AS198403 accept ANY # MATRIGO
export:         to AS198403 announce ANY
import:         from AS56717 accept ANY # RESAL
export:         to AS56717 announce ANY
import:         from AS197698 accept ANY # D-H-T
export:         to AS197698 announce ANY
import:         from AS47131 accept ANY # PHSPOL
export:         to AS47131 announce ANY
import:         from AS43614 accept ANY # ECONOMIA
export:         to AS43614 announce ANY
import:         from AS56456 accept ANY # C2NET
export:         to AS56456 announce ANY
import:         from AS20708 accept ANY # SKODA AUTO a.s.
export:         to AS20708 announce ANY
import:         from AS62178 accept ANY # MASTER IT
export:         to AS62178 announce ANY
import:         from AS49488 accept ANY # TLD via NIX
export:         to AS49488 announce ANY
import:         from AS60275 accept ANY # RVTECH
export:         to AS60275 announce ANY
import:         from AS3161 accept ANY # IT Profi Vimperk
export:         to AS3161 announce ANY
import:         from AS20609 accept ANY # Kaza
export:         to AS20609 announce ANY
import:         from AS30738 accept ANY # Netart
export:         to AS30738 announce ANY
import:         from AS50975 accept ANY # AVX_AS
export:         to AS50975 announce ANY
import:         from AS62159 accept ANY # HAPPY Technik
export:         to AS62159 announce ANY
import:         from AS197019 accept ANY # Wedos
export:         to AS197019 announce ANY
import:         from AS200155 accept ANY # TCPISEK-CZ
export:         to AS200155 announce ANY
import:         from AS200355 accept ANY # CADCANET
export:         to AS200355 announce ANY
import:         from AS201457 accept ANY # KOOPERATIVA-AS
export:         to AS201457 announce ANY
import:         from AS42908 accept ANY # AS-NORDICTELECOM
export:         to AS42908 announce ANY
import:         from AS213387 accept ANY # TESUNET
export:         to AS213387 announce ANY
import:         from AS206159 accept ANY # Fresh Data
export:         to AS206159 announce ANY
remarks:        End of list
admin-c:        CDT-RIPE
tech-c:         CDT-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CDT-MNT
created:        2002-12-17T14:28:40Z
last-modified:  2025-07-29T11:30:12Z
source:         RIPE

organisation:   ORG-CTa3-RIPE
org-name:       CD-Telematika a.s.
country:        CZ
reg-nr:         61459445
org-type:       LIR
address:        Pernerova 2819/2a
address:        130 00,
address:        Praha 3
address:        CZECH REPUBLIC
phone:          +420210021695
fax-no:         +420210021610
e-mail:         ip@cdt.cz
admin-c:        MS58623-RIPE
admin-c:        PL1116-RIPE
abuse-c:        CDT-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CDT-MNT
notify:         abuse@cdt.cz
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CDT-MNT
created:        2004-04-17T11:04:09Z
last-modified:  2026-05-13T07:18:28Z
source:         RIPE

role:           CDT hostmaster
address:        CD-Telematika a.s.
address:        Pod Taborem 6
address:        Praha 9
address:        191 00
address:        The Czech Republic
phone:          +420 210021 685
fax-no:         +420 210021 699
e-mail:         abuse@cdt.cz
remarks:        --------------------------------------------------
remarks:        abuse and spam reports please mail to abuse@cdt.cz
remarks:
remarks:        peering and technical communication
remarks:        mail to ip(at)cdt.cz
remarks:        --------------------------------------------------
admin-c:        PL1116-RIPE
admin-c:        CJ167-RIPE
admin-c:        ZP642-RIPE
admin-c:        MS58623-RIPE
admin-c:        LP15291-RIPE
admin-c:        VP16243-RIPE
tech-c:         PL1116-RIPE
tech-c:         CJ167-RIPE
tech-c:         ZP642-RIPE
tech-c:         MS58623-RIPE
tech-c:         LP15291-RIPE
tech-c:         VP16243-RIPE
abuse-mailbox:  abuse@cdt.cz
nic-hdl:        CDT-RIPE
mnt-by:         CDT-MNT
created:        2004-01-26T14:58:45Z
last-modified:  2026-07-21T13:26:33Z
source:         RIPE