Autonomous System details

AS25512

CD-Telematika a.s.  ·  cdt.cz

Czechia

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AS25512 – CD-Telematika a.s.

Field Value
Country Czechia
Website cdt.cz
Hosted domains 1,957
IPv4 addresses 117,760
IPv6 addresses 79,228,162,514,264,338,000,000,000,000
ASN type ISP
Registry ripe
Allocated 23 years ago on Dec 17, 2002
Updated 9 months ago on Jul 29, 2025

IP Ranges

Netblock Company Num of IPs
89.203.128.0/17 CD-Telematika a.s. 32,768
82.202.64.0/18 CD-Telematika a.s. 16,384
85.13.64.0/18 CD-Telematika a.s. 16,384
213.235.128.0/18 CD-Telematika a.s. 16,384
82.117.128.0/19 CD-Telematika a.s. 8,192
195.146.96.0/19 CD-Telematika a.s. 8,192
212.11.96.0/19 CD-Telematika a.s. 8,192
81.19.32.0/20 CD-Telematika a.s. 4,096
85.184.16.0/20 CD-Telematika a.s. 4,096
131.117.192.0/21 CD-Telematika a.s. 2,048
185.134.0.0/22 CD-Telematika a.s. 1,024

Netblock Company
2001:1a48::/32 CD-Telematika a.s.
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WHOIS Details

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                                                ASHandle:       AS25512
                                                OrgID:          AS25512
                                                ASName:         AS25512
                                                ASNumber:       AS25512
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 1,957 domain names hosted across 544 IP addresses on this ASN.

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IP Address Domain Domains on this IP
81.19.42.5 ██████████ 84
82.202.105.206 ██████████ 76
89.203.160.25 ██████████ 59
195.146.100.73 ██████████ 44
212.11.104.13 ██████████ 41
195.146.111.115 ██████████ 40
81.19.42.113 ██████████ 39
89.203.197.145 ██████████ 37
89.203.160.24 ███████ 37
81.19.42.107 ██████████ 36

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Peers

There are 55 peers for this ASN.

Peers Name
AS1239 Cogent Communications, LLC
AS1299 Arelion Sweden AB
AS13335 Cloudflare, Inc.
AS14840 BR.Digital Telecom
AS174 Cogent Communications, LLC
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS197550 Internet4you.cz, spol. s r.o.
AS198150 SIACOM JSC
AS200355 CadcaNet plus s. r. o.
AS200678 Komplet NET s.r.o.
AS200828 TERMS a.s.
AS20609 KAZA.cz s.r.o.
AS206159 Fresh Data s.r.o.
AS20708 SKODA AUTO a.s.
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS213387 TeSuNet s.r.o.
AS216450 Letiste Praha, a. s.
AS22356 Durand do Brasil Ltda
AS24482 SG.GS
AS24940 Hetzner Online GmbH
AS29504 Freenet Liberec, z.s.
AS3161 IT PROFI s.r.o.
AS32590 Valve Corporation
AS32787 Akamai Technologies, Inc.
AS33891 Core-Backbone GmbH
AS35046 OMEGA plus Chrudim s.r.o.
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS43507 RETE internet, s.r.o.
AS43614 Economia a.s.
AS43733 Viva Armenia CJSC
AS44306 OMONIA d.o.o.
AS4455 IX Reach Ltd
AS47131 PH, spol. s r. o.
AS47868 AS SUPRO-NET
AS48417 ITS akciova spolecnost
AS49544 i3D.net B.V
AS50975 KYOCERA AVX Components s.r.o.
AS51184 Fonira Telekom GmbH
AS51331 SychrovNET s.r.o
AS51449 Kabelova televize Usti nad Orlici, spol. s r. o.
AS51524 Ales Tesacek
AS54113 Fastly, Inc.
AS56450 Alberon Letohrad s.r.o
AS56827 mirnet s.r.o.
AS57463 NetIX Communications JSC
AS60275 RVTech s.r.o.
AS6204 INTERKVM HOST SRL
AS6461 Zayo Bandwidth
AS6663 Euroweb Romania S.R.L.
AS6881 NIX.CZ z.s.p.o.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams Name
AS1299 Arelion Sweden AB
AS174 Cogent Communications, LLC
AS6461 Zayo Bandwidth
AS6939 Hurricane Electric LLC
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ASN API & Database

Downstreams

There are 27 downstreams for this ASN.

Downstreams Name
AS1299 Arelion Sweden AB
AS174 Cogent Communications, LLC
AS197550 Internet4you.cz, spol. s r.o.
AS200355 CadcaNet plus s. r. o.
AS200678 Komplet NET s.r.o.
AS200828 TERMS a.s.
AS20609 KAZA.cz s.r.o.
AS206159 Fresh Data s.r.o.
AS20708 SKODA AUTO a.s.
AS213387 TeSuNet s.r.o.
AS216450 Letiste Praha, a. s.
AS3161 IT PROFI s.r.o.
AS35046 OMEGA plus Chrudim s.r.o.
AS43507 RETE internet, s.r.o.
AS43614 Economia a.s.
AS47131 PH, spol. s r. o.
AS47868 AS SUPRO-NET
AS48417 ITS akciova spolecnost
AS50975 KYOCERA AVX Components s.r.o.
AS51331 SychrovNET s.r.o
AS51449 Kabelova televize Usti nad Orlici, spol. s r. o.
AS51524 Ales Tesacek
AS56450 Alberon Letohrad s.r.o
AS56827 mirnet s.r.o.
AS60275 RVTech s.r.o.
AS6461 Zayo Bandwidth
AS6881 NIX.CZ z.s.p.o.
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Pingable IPs

265 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
89.203.223.21 AS25512 CD-Telematika a.s. 2.04ms from Prague, CZ
212.11.115.13 AS25512 CD-Telematika a.s. 3.03ms from Prague, CZ
85.13.92.253 AS25512 CD-Telematika a.s. 2.61ms from Prague, CZ
89.203.141.1 AS25512 CD-Telematika a.s. 3.10ms from Prague, CZ
85.13.86.17 AS25512 CD-Telematika a.s. 2.63ms from Prague, CZ
212.11.127.88 AS25512 CD-Telematika a.s. 1.32ms from Prague, CZ
2001:1a48:2e:1::254 AS25512 CD-Telematika a.s. 3.75ms from Prague, CZ
82.202.113.1 AS25512 CD-Telematika a.s. 4.51ms from Prague, CZ
213.235.131.1 AS25512 CD-Telematika a.s. 0.38ms from Prague, CZ
89.203.152.2 AS25512 CD-Telematika a.s. 4.74ms from Prague, CZ
82.202.107.137 AS25512 CD-Telematika a.s. 2.90ms from Prague, CZ
81.19.36.129 AS25512 CD-Telematika a.s. 0.36ms from Prague, CZ
89.203.162.12 AS25512 CD-Telematika a.s. 2.87ms from Prague, CZ
82.117.141.25 AS25512 CD-Telematika a.s. 4.02ms from Prague, CZ
212.11.112.241 AS25512 CD-Telematika a.s. 3.00ms from Prague, CZ
212.11.114.225 AS25512 CD-Telematika a.s. 2.99ms from Prague, CZ
82.117.134.1 AS25512 CD-Telematika a.s. 2.89ms from Prague, CZ
89.203.227.1 AS25512 CD-Telematika a.s. 4.48ms from Prague, CZ
213.235.128.129 AS25512 CD-Telematika a.s. 0.35ms from Prague, CZ
89.203.205.49 AS25512 CD-Telematika a.s. 8.65ms from Prague, CZ
81.19.46.193 AS25512 CD-Telematika a.s. 0.33ms from Prague, CZ
212.11.98.38 AS25512 CD-Telematika a.s. 1.00ms from Prague, CZ
195.146.111.119 AS25512 CD-Telematika a.s. 1.37ms from Prague, CZ
89.203.212.193 AS25512 CD-Telematika a.s. 0.24ms from Prague, CZ
82.202.120.78 AS25512 CD-Telematika a.s. 0.92ms from Prague, CZ

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
96.4.2.120 AS11686 Zayo Bandwidth 6.63ms from Atlanta, US
70.72.85.40 AS6327 Shaw Communications 2.02ms from Calgary, CA
3.253.90.216 AS16509 Amazon.com, Inc. 0.15ms from Dublin, IE
52.57.252.216 AS16509 Amazon.com, Inc. 0.14ms from Frankfurt am Main, DE
113.45.121.8 AS55990 Huawei Cloud Service data center 9.99ms from Guangzhou, CN
140.240.143.24 AS4134 CHINANET BACKBONE 4.03ms from Haikou, CN
113.173.165.136 AS45899 VNPT Corp 1.56ms from Ho Chi Minh City, VN
136.47.15.104 AS16591 Google Fiber Inc. 11.12ms from Salt Lake City, US
108.252.121.136 AS7018 AT&T Enterprises, LLC 6.58ms from San Jose, US
209.126.116.136 AS30083 velia.net 0.19ms from St. Louis, US
194.179.135.104 AS57630 84 Grams AB 0.16ms from Stockholm, SE
49.158.28.72 AS24164 UNION BROADBAND NETWORK 4.89ms from Taipei, TW
217.159.193.8 AS3249 Telia Eesti AS 3.38ms from Tallinn, EE
52.69.227.184 AS16509 Amazon.com, Inc. 0.31ms from Tokyo, JP
24.250.149.184 AS22773 Cox Communications Inc. 11.16ms from Atlanta, US
170.79.122.216 AS266291 ANDERNET TELECOM LTDA - ME 10.76ms from Campina Grande, BR
96.52.97.72 AS6327 Shaw Communications 4.18ms from Edmonton, CA
84.162.48.248 AS3320 Deutsche Telekom AG 8.30ms from Frankfurt am Main, DE
90.186.63.248 AS3209 Vodafone GmbH 4.96ms from Hamburg, DE
175.210.234.248 AS4766 Korea Telecom 1.09ms from Incheon, KR
13.126.16.72 AS16509 Amazon.com, Inc. 0.15ms from Mumbai, IN
106.251.121.104 AS3786 LG DACOM Corporation 1.93ms from Seoul, KR
115.16.27.184 AS4766 Korea Telecom 6.52ms from Seoul, KR
124.222.163.8 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.30ms from Shanghai, CN
149.174.66.168 AS272096 PACKETHUB S.A. 0.32ms from Singapore, SG

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -m5 82.202.84.0
traceroute to 82.202.84.0 (82.202.84.0): 5 hops max, 52 byte packets
1 [AS15085] 66.219.24.81 3.307 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Asheville, US
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS25512 at robtex.

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