Autonomous System details

AS28725

CETIN a.s. · cetin.cz

Czechia

BitTorrent

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AS28725 – CETIN a.s.

Field	Value
Country	Czechia
Website	cetin.cz
Hosted domains	1,371
IPv4 addresses	133,888
IPv6 addresses	713,053,462,628,379,038,341,895,553,024
ASN type	ISP
Registry	ripe
Allocated	23 years ago on Feb 10, 2003
Updated	6 years ago on Mar 24, 2020

Netblock	Company	Num of IPs
85.162.0.0/15	CETIN a.s.	131,072
85.162.0.0/16	CETIN a.s.	65,536
85.163.0.0/16	CETIN a.s.	65,536
194.50.64.0/22	Czech Republic, Ministerstvo Obrany	1,024
194.147.12.0/22	CETIN a.s.	1,024
185.218.92.0/23	Pernstejn.net, z.s.	512
136.238.226.0/24	Schindler Informatik AG	256

Netblock	Company
2a07:1f40::/29	CETIN a.s.
2a0b:bb40::/32	Netstone s.r.o.

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WHOIS Details

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                                                ASHandle:       AS28725
                                                OrgID:          AS28725
                                                ASName:         AS28725
                                                ASNumber:       AS28725
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 1,371 domain names hosted across 257 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
85.163.57.245	█████████	80
85.163.68.130	██████████	75
85.163.181.56	██████████	70
85.163.23.103	██████████	68
85.163.57.44	██████████	52
85.163.228.10	██████████	49
85.163.21.79	████████	39
85.163.35.132	██████████	39
85.163.36.19	██████████	35
85.163.114.197	██████████	34

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Hosted Domains API & Database

Peers

There are 233 peers for this ASN.

Peers	Name
AS1031	PEER 1031 LLC
AS1103	SURF B.V.
AS1140	Stichting Internet Domeinregistratie Nederland
AS12552	GlobalConnect AB
AS12637	SEEWEB s.r.l.
AS1267	WIND TRE S.P.A.
AS12713	OTEGlobe
AS12779	IT.Gate S.p.A.
AS12859	BIT BV
AS12969	Vodafone Iceland
AS1299	Arelion Sweden AB
AS13030	Init7 (Switzerland) Ltd.
AS13058	serve-u - Buchholz und Suenderhauf GbR
AS132337	Axclusive
AS13237	euNetworks GmbH
AS137409	GSL Networks Pty LTD
AS142271	EWS DS Networks Inc
AS14537	Continent 8 LLC
AS14630	Invesco Group Services, Inc.
AS14840	BR.Digital Telecom
AS14907	Wikimedia Foundation Inc.
AS15547	netplus.ch SA
AS15576	NTS workspace AG
AS15605	Connesi s.p.a.
AS15958	CETINdoo-NET
AS16552	Tiggee LLC
AS174	Cogent Communications, LLC
AS17639	Converge ICT Solutions Inc.
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS18106	Viewqwest Pte Ltd
AS1828	Unitas Global
AS1836	green.ch AG
AS19637	Avago Technologies U.S. Inc.
AS196849	MO BYRTUS s.r.o.
AS196952	BEZVANET s.r.o.
AS197565	NHK Solutions s.r.o.
AS198150	SIACOM JSC
AS198248	Richard Filip
AS198249	Ops One AG
AS198346	NETFORMS s.r.o.
AS198385	AlpineDC SA
AS199524	G-Core Labs S.A.
AS199938	Netzwerge GmbH
AS201265	ANAFRA a.s.
AS202297	Skylon Solutions Limited
AS203365	Optet network, s. r. o.
AS203645	Jan Ryznar
AS204351	NAM system, a.s.
AS20485	Joint Stock Company TransTeleCom
AS205112	PHILUNET GmbH
AS205619	Jiri Chalabala
AS20562	Broadband Hosting B.V.
AS206177	SitePark s.r.o.
AS206356	Freifunk Essen e.V.
AS206438	MX-NET Telekomunikace s.r.o.
AS20764	CJSC RASCOM
AS207841	Inferno Communications Ltd
AS20932	Services Industriels de Geneve
AS209823	Enki Multimedia EURL
AS209947	M-wifi internet s.r.o.
AS210937	Xiufeng Guo
AS211826	Istqrar for Servers Services Ltd
AS212024	Marc Schmitt
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS212859	KXCOMM s.r.o.
AS212975	TeamCity s.r.o.
AS213151	Christian Elsen
AS213241	TECHIT.BE SRL
AS213559	MyOffice, s.r.o.
AS21412	UAB Cgates
AS22356	Durand do Brasil Ltda
AS24482	SG.GS
AS24641	FASTER CZ spol. s r.o.
AS24889	Monzoon Networks AG
AS24961	WIIT AG
AS25091	IP-Max SA
AS25160	Vorboss Limited
AS25220	equada network GmbH
AS25369	Hydra Communications Ltd
AS263152	MIGO TELECOM
AS264479	Turbozone Internet
AS271253	LINK BRASIL TELECOMUNICACOES LTDA
AS28716	Retelit Digital Services S.p.A.
AS28792	Public Internet Ltd
AS28917	Fiord Networks, UAB
AS29049	Delta Telecom Ltd
AS29075	IELO Main Network
AS29140	Hostserver GmbH
AS29298	SUSE Software Solutions Germany GmbH
AS293	ESnet
AS29504	Freenet Liberec, z.s.
AS29632	Netassist International EOOD
AS29691	Nine Internet Solutions AG
AS30781	Free Pro SAS
AS30844	Liquid Telecommunications Ltd
AS31027	GlobalConnect A/S
AS31122	Digiweb ltd
AS31510	Innsbrucker Kommunalbetriebe AG
AS3170	VeloxServ Communications Ltd
AS31742	Sotaconnect Network

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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 31 downstreams for this ASN.

Downstreams	Name
AS19637	Avago Technologies U.S. Inc.
AS196849	MO BYRTUS s.r.o.
AS196952	BEZVANET s.r.o.
AS197565	NHK Solutions s.r.o.
AS198248	Richard Filip
AS198346	NETFORMS s.r.o.
AS203365	Optet network, s. r. o.
AS203645	Jan Ryznar
AS204351	NAM system, a.s.
AS205619	Jiri Chalabala
AS206177	SitePark s.r.o.
AS206438	MX-NET Telekomunikace s.r.o.
AS209947	M-wifi internet s.r.o.
AS211826	Istqrar for Servers Services Ltd
AS212859	KXCOMM s.r.o.
AS212975	TeamCity s.r.o.
AS213559	MyOffice, s.r.o.
AS24641	FASTER CZ spol. s r.o.
AS29298	SUSE Software Solutions Germany GmbH
AS35046	OMEGA plus Chrudim s.r.o.
AS35613	FASTER CZ spol. s r.o.
AS48364	Radim Pytela trading as AC Vyskov
AS50784	Intraweb servis s.r.o.
AS51382	COMANET NETWORK
AS52029	Palanet s.r.o.
AS56427	Michal Hradil
AS56566	SATT a.s.
AS57288	StaMPi, spol. s r.o.
AS57294	Internet Expert s.r.o.
AS57560	XLNET s.r.o.
AS57825	MoravanyNET s.r.o.

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
2a0b:bb40::1	AS28725 CETIN a.s.	`5.62ms` from Prague, CZ
2a0b:bb40:1027::1	AS28725 CETIN a.s.	`8.81ms` from Prague, CZ
85.163.89.0	AS28725 CETIN a.s.	`10.02ms` from Prague, CZ
85.162.172.55	AS28725 CETIN a.s.	`1.96ms` from Prague, CZ
85.163.180.254	AS28725 CETIN a.s.	`4.96ms` from Prague, CZ
2a0b:bb40:406a:0:c225:e9ff:fe4b:51b9	AS28725 CETIN a.s.	`10.02ms` from Prague, CZ
85.163.75.3	AS28725 CETIN a.s.	`5.03ms` from Prague, CZ
2a0b:bb40:401d::1	AS28725 CETIN a.s.	`9.04ms` from Prague, CZ
2a0b:bb40:108d:0:4a22:54ff:fee3:21fa	AS28725 CETIN a.s.	`6.41ms` from Prague, CZ
85.163.57.246	AS28725 CETIN a.s.	`3.43ms` from Prague, CZ
2a0b:bb40:105c::1	AS28725 CETIN a.s.	`8.21ms` from Prague, CZ
85.163.101.217	AS28725 CETIN a.s.	`3.48ms` from Prague, CZ
85.163.47.161	AS28725 CETIN a.s.	`4.73ms` from Prague, CZ
85.163.234.93	AS28725 CETIN a.s.	`5.50ms` from Prague, CZ
85.163.10.75	AS28725 CETIN a.s.	`0.66ms` from Prague, CZ
2a0b:bb40:1065::1	AS28725 CETIN a.s.	`7.86ms` from Prague, CZ
85.162.168.33	AS28725 CETIN a.s.	`1.59ms` from Prague, CZ
85.163.83.155	AS28725 CETIN a.s.	`5.28ms` from Prague, CZ
85.163.169.250	AS28725 CETIN a.s.	`4.50ms` from Prague, CZ
2a0b:bb40:11d9::1	AS28725 CETIN a.s.	`7.37ms` from Prague, CZ
2a07:1f41:42:3:2ec8:1bff:fef4:d5a	AS28725 CETIN a.s.	`6.42ms` from Prague, CZ
85.163.237.29	AS28725 CETIN a.s.	`8.32ms` from Prague, CZ
85.163.149.44	AS28725 CETIN a.s.	`5.62ms` from Prague, CZ
2a07:1f41:35:12::3	AS28725 CETIN a.s.	`3.85ms` from Prague, CZ
85.163.16.52	AS28725 CETIN a.s.	`0.30ms` 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
52.146.20.117	AS8075 Microsoft Corporation	`0.58ms` from Ashburn, US
85.109.85.181	AS9121 Turk Telekomunikasyon Anonim Sirketi	`14.26ms` from Bursa, TR
192.237.161.5	AS19994 Rackspace Hosting	`1.26ms` from Chicago, US
65.141.230.229	AS209 CenturyLink Communications, LLC	`0.63ms` from Denver, US
188.174.34.149	AS8767 M-net Telekommunikations GmbH	`4.12ms` from Frankfurt am Main, DE
82.24.211.133	AS51765 Oy Creanova Hosting Solutions Ltd.	`0.23ms` from Helsinki, FI
160.124.30.21	AS132839 POWER LINE DATACENTER	`1.04ms` from Hong Kong, HK
95.148.15.37	AS2856 British Telecommunications PLC	`1.97ms` from London, GB
185.190.163.197	AS206135 Nethive SpA	`0.22ms` from Milan, IT
90.154.104.117	AS12389 PJSC Rostelecom	`0.42ms` from Moscow, RU
113.153.24.165	AS2516 KDDI CORPORATION	`7.16ms` from Osaka, JP
67.23.70.5	AS33724 VOLICO	`0.16ms` from Pompano Beach, US
18.215.111.181	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
205.122.133.5	AS210 Utah Education Network	`1.84ms` from Salt Lake City, US
177.180.214.229	AS28573 Claro NXT Telecomunicacoes Ltda	`6.58ms` from Sao Jose do Rio Preto, BR
220.125.153.37	AS4766 Korea Telecom	`4.59ms` from Seoul, KR
119.149.98.69	AS9770 LG HelloVision Corp.	`7.73ms` from Seoul, KR
178.215.211.21	AS51336 Gemzo information technology Private Joint-Stock company	`3.98ms` from Tel Aviv, IL
211.151.118.5	AS9308 Abitcool(China) Inc.	`3.22ms` from Tianjin, CN
54.65.153.53	AS16509 Amazon.com, Inc.	`0.27ms` from Tokyo, JP
83.29.36.37	AS5617 Orange Polska Spolka Akcyjna	`8.34ms` from Warsaw, PL
23.71.194.37	AS7922 Comcast Cable Communications, LLC	`2.70ms` from Ashburn, US
76.124.15.5	AS7922 Comcast Cable Communications, LLC	`8.29ms` from Ashburn, US
182.95.115.53	AS9498 BHARTI Airtel Ltd.	`1.08ms` from Bengaluru, IN
20.114.169.37	AS8075 Microsoft Corporation	`0.22ms` from Boydton, US

Traceroute

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

traceroute -a -n -q1 -m5 85.163.216.209

traceroute to 85.163.216.209 (85.163.216.209): 5 hops max, 52 byte packets

1 [AS31898] 140.91.222.92 0.079 ms

2 [] 80.249.213.176 0.674 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On February 16th 2026

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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 AS28725 at robtex.

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