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 79,228,162,514,264,337,593,543,950,336
ASN type Hosting
Registry ripe
Allocated 23 years ago on Dec 17, 2002
Updated 8 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 ██████████ 95
82.202.105.206 ██████████ 94
89.203.160.25 █████████ 45
89.203.197.145 ██████████ 45
195.146.100.73 ██████████ 43
85.13.80.72 ██████████ 42
81.19.42.107 ██████████ 42
195.146.111.115 ██████████ 41
212.11.104.13 ██████████ 40
81.19.42.113 ██████████ 40

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Hosted Domains API & Database

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
AS16509 Amazon.com, Inc.
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
AS29504 Freenet Liberec, z.s.
AS3161 IT PROFI s.r.o.
AS32590 Valve Corporation
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.
AS44306 OMONIA d.o.o.
AS4455 IX Reach Ltd
AS47131 PH, spol. s r. o.
AS47232 ISP Alliance a.s.
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
AS56717 OG Soft 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 28 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
AS56717 OG Soft 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

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

IP Address ASN Details
82.202.78.49 AS25512 CD-Telematika a.s. 2.45ms from Prague, CZ
82.202.77.105 AS25512 CD-Telematika a.s. 2.48ms from Prague, CZ
85.13.73.1 AS25512 CD-Telematika a.s. 3.68ms from Prague, CZ
81.19.46.113 AS25512 CD-Telematika a.s. 0.34ms from Prague, CZ
213.235.128.129 AS25512 CD-Telematika a.s. 0.34ms from Prague, CZ
89.203.158.1 AS25512 CD-Telematika a.s. 3.35ms from Prague, CZ
89.203.202.2 AS25512 CD-Telematika a.s. 0.35ms from Prague, CZ
2001:1a48:c:ffff::3 AS25512 CD-Telematika a.s. 5.66ms from Prague, CZ
82.202.74.57 AS25512 CD-Telematika a.s. 2.35ms from Prague, CZ
2001:1a48:2::2 AS25512 CD-Telematika a.s. 6.14ms from Prague, CZ
82.202.107.137 AS25512 CD-Telematika a.s. 2.88ms from Prague, CZ
213.235.156.97 AS25512 CD-Telematika a.s. 0.33ms from Prague, CZ
85.13.80.57 AS25512 CD-Telematika a.s. 0.38ms from Prague, CZ
85.13.96.61 AS25512 CD-Telematika a.s. 0.27ms from Prague, CZ
213.235.141.254 AS25512 CD-Telematika a.s. 3.63ms from Prague, CZ
89.203.204.2 AS25512 CD-Telematika a.s. 0.36ms from Prague, CZ
89.203.138.188 AS25512 CD-Telematika a.s. 2.37ms from Prague, CZ
2001:1a48:24:101::4 AS25512 CD-Telematika a.s. 0.35ms from Prague, CZ
89.203.129.87 AS25512 CD-Telematika a.s. 0.31ms from Prague, CZ
85.13.106.107 AS25512 CD-Telematika a.s. 0.42ms from Prague, CZ
213.235.186.1 AS25512 CD-Telematika a.s. 3.23ms from Prague, CZ
81.19.34.9 AS25512 CD-Telematika a.s. 0.29ms from Prague, CZ
85.13.85.1 AS25512 CD-Telematika a.s. 2.57ms from Prague, CZ
89.203.145.125 AS25512 CD-Telematika a.s. 6.09ms from Prague, CZ
82.117.156.254 AS25512 CD-Telematika a.s. 3.67ms 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
83.232.8.184 AS1136 KPN B.V. 12.22ms from Amsterdam, NL
167.89.69.72 AS11377 SendGrid, Inc. 0.38ms from Ashburn, US
91.5.238.248 AS3320 Deutsche Telekom AG 2.11ms from Berlin, DE
44.227.122.104 AS16509 Amazon.com, Inc. 0.20ms from Boardman, US
71.235.8.168 AS7922 Comcast Cable Communications, LLC 8.16ms from Boston, US
181.82.60.104 AS7303 Telecom Argentina S.A. 9.44ms from Buenos Aires, AR
3.139.212.88 AS16509 Amazon.com, Inc. 0.12ms from Columbus, US
34.72.45.56 AS396982 Google LLC 0.13ms from Council Bluffs, US
74.40.234.184 AS5650 Frontier Communications of America, Inc. 18.62ms from Los Angeles, US
87.180.122.8 AS3320 Deutsche Telekom AG 3.42ms from Nuernberg, DE
112.155.231.104 AS17858 LG POWERCOMM 1.86ms from Seoul, KR
91.140.14.232 AS25472 Nova Telecommunications & Media Single Member S.A 10.14ms from Thessaloniki, GR
42.179.162.24 AS4837 CHINA UNICOM China169 Backbone 3.04ms from Tieling, CN
145.128.236.168 AS28685 Routit BV 2.50ms from Amsterdam, NL
35.245.104.8 AS396982 Google LLC 0.13ms from Ashburn, US
74.221.187.200 AS26827 EPB Fiber Optics 2.90ms from Atlanta, US
97.69.170.56 AS33363 Charter Communications, Inc 12.26ms from Chicago, US
52.212.104.24 AS16509 Amazon.com, Inc. 0.18ms from Dublin, IE
93.226.208.40 AS3320 Deutsche Telekom AG 4.98ms from Duesseldorf, DE
2.32.15.88 AS30722 Fastweb SpA 7.29ms from Frosinone, IT
154.204.175.104 AS400619 AROSSCLOUD INC. 0.89ms from Hong Kong, HK
103.23.175.136 AS58403 Bank Pembangunan Daerah DIY 11.01ms from Jakarta, ID
82.42.44.24 AS5089 Virgin Media Limited 6.24ms from London, GB
51.140.87.184 AS8075 Microsoft Corporation 0.28ms from London, GB
85.165.151.56 AS2119 Telenor Norge AS 6.30ms from Oslo, NO

Traceroute

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

$
traceroute -a -n -q1 -f2 82.117.152.252
traceroute to 82.117.152.252 (82.117.152.252): 64 hops max, 52 byte packets
2 [] 91.210.16.101 0.337 ms
3 [AS25512] 81.19.34.25 0.389 ms
4 [AS25512] 81.19.34.122 5.114 ms
Measurement taken from IPinfo ProbeNet in Prague, CZ
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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