185.4.203.0/24

AS44002 · Sys-DataCom s.r.o.

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Summary

Country	Czechia
Domain	tcnet.cz
ASN	AS44002
Parent Range	185.4.200.0/22
Registry	RIPE
ID	TCNET_CUSTOMER

WHOIS Details

inetnum:        185.4.203.0 - 185.4.203.127
netname:        TCNET_CUSTOMER
descr:          TCnet.cz network - Blatouchova
country:        CZ
admin-c:        SD4556-RIPE
tech-c:         SD4556-RIPE
status:         ASSIGNED PA
mnt-by:         MNT-SYSDATACOM
created:        2018-09-06T06:41:17Z
last-modified:  2018-09-06T06:41:17Z
source:         RIPE
mnt-lower:      MNT-SYSDATACOM
mnt-routes:     MNT-SYSDATACOM
abuse-email:    ripe-abuse@sys-data.com
abuse-c:        AR13501-RIPE
abuse-org:      ORG-Ss84-RIPE

role:           Sys-Datacom skupina
address:        Prochazkova 634/9
address:        Prague
address:        Czech Republic
phone:          +420777774220
e-mail:         lir@sys-data.com
abuse-mailbox:  ripe-abuse@sys-data.com
admin-c:        RM3777-RIPE
admin-c:        GK1891-RIPE
admin-c:        JC3709-RIPE
admin-c:        JV3501-RIPE
tech-c:         RM3777-RIPE
tech-c:         GK1891-RIPE
tech-c:         JC3709-RIPE
tech-c:         JV3501-RIPE
notify:         lir@sys-data.com
nic-hdl:        SD4556-RIPE
mnt-by:         MNT-SYSDATACOM
created:        2007-10-25T10:32:08Z
last-modified:  2018-11-01T22:29:28Z
source:         RIPE

route:          185.4.203.0/24
descr:          SYS-DATACOM TTC 3.
origin:         AS44002
mnt-by:         MNT-SYSDATACOM
created:        2014-11-12T15:22:26Z
last-modified:  2014-11-12T15:22:26Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 185.4.203.0/24

Range	ASN	Company	Num of IPs
185.4.200.0/22	AS44002	Sys-DataCom s.r.o.	1,024

Hosted domains

There are 4 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
185.4.203.7	mudrc.net	2

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
185.4.203.66	AS44002 Sys-DataCom s.r.o.	`0.39ms` 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
145.131.146.184	AS28685 Routit BV	`3.23ms` from Amsterdam, NL
108.32.49.72	AS701 Verizon Business	`7.32ms` from Ashburn, US
99.154.8.120	AS7018 AT&T Enterprises, LLC	`3.90ms` from Chicago, US
123.22.194.72	AS45899 VNPT Corp	`3.56ms` from Ho Chi Minh City, VN
196.45.22.8	AS37266 Amobia Communications	`16.64ms` from Johannesburg, ZA
108.218.50.120	AS7018 AT&T Enterprises, LLC	`6.85ms` from Miami, US
45.170.208.8	AS268170 DOWNLOAD NET TELECOM LTDA - ME	`6.67ms` from Osasco, BR
187.11.34.104	AS27699 TELEFÔNICA BRASIL S.A	`2.02ms` from Osasco, BR
201.93.93.24	AS27699 TELEFÔNICA BRASIL S.A	`1.81ms` from Sao Paulo, BR
49.30.154.8	AS4766 Korea Telecom	`6.83ms` from Seoul, KR
118.233.147.88	AS38841 kbro CO. Ltd.	`6.16ms` from Taipei, TW
20.4.205.152	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
206.74.50.136	AS395437 Highland Communications LLC	`9.66ms` from Atlanta, US
186.119.227.24	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`2.96ms` from Bogota, CO
4.249.241.72	AS8075 Microsoft Corporation	`0.22ms` from Des Moines, US
217.86.223.40	AS3320 Deutsche Telekom AG	`3.27ms` from Duesseldorf, DE
84.153.23.56	AS3320 Deutsche Telekom AG	`5.47ms` from Frankfurt am Main, DE
84.130.51.216	AS3320 Deutsche Telekom AG	`8.09ms` from Frankfurt am Main, DE
185.58.207.56	AS207569 I-SERVERS LTD	`0.27ms` from Helsinki, FI
42.54.66.184	AS4837 CHINA UNICOM China169 Backbone	`4.62ms` from Liaoyang, CN
34.138.194.120	AS396982 Google LLC	`0.16ms` from Moncks Corner, US
74.71.164.72	AS12271 Charter Communications Inc	`3.53ms` from New York City, US
82.120.90.24	AS3215 Orange S.A.	`9.36ms` from Paris, FR
221.153.224.8	AS4766 Korea Telecom	`1.45ms` from Seoul, KR
220.91.225.200	AS4766 Korea Telecom	`1.83ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f3 185.4.203.235

traceroute to 185.4.203.235 (185.4.203.235): 64 hops max, 52 byte packets

3 [] 91.210.16.121 7.684 ms

4 [] 91.210.16.109 7.946 ms

5 [AS204064] 185.116.51.106 7.211 ms

6 [AS44002] 79.98.75.249 7.346 ms

7 [AS44002] 79.98.75.245 7.508 ms

8 [AS44002] 185.4.203.235 24.889 ms

Measurement taken from

IPinfo ProbeNet in Frankfurt am Main, DE

On September 11th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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