178.23.232.0/21

AS39906 · CoProSys a.s.

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Summary

Country	Czechia
Domain	coprosys.cz
ASN	AS39906
Registry	RIPE
ID	CZ-COPROSYS-20100428

WHOIS Details

inetnum:        178.23.232.0 - 178.23.239.255
netname:        CZ-COPROSYS-20100428
country:        CZ
org:            ORG-Ca781-RIPE
admin-c:        CPST1-RIPE
tech-c:         CPST1-RIPE
status:         ALLOCATED PA
notify:         notify@coprosys.cz
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         COPROSYS-MNT
mnt-lower:      COPROSYS-MNT
mnt-routes:     COPROSYS-MNT
created:        2010-04-28T07:15:18Z
last-modified:  2016-07-15T11:06:32Z
source:         RIPE
abuse-email:    abuse@coprosys.cz
abuse-c:        AR14409-RIPE
abuse-org:      ORG-Ca781-RIPE

organisation:   ORG-CA781-RIPE
org-name:       CoProSys a.s.
country:        CZ
org-type:       LIR
address:        Na Kopci 239
address:        537 05
address:        CHRUDIM IV
address:        CZECH REPUBLIC
phone:          +420469775775
fax-no:         +420469622592
e-mail:         hostmaster@coprosys.cz
admin-c:        AK12925-RIPE
admin-c:        VJ238-RIPE
tech-c:         CPST1-RIPE
abuse-c:        AR14409-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        COPROSYS-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         COPROSYS-MNT
created:        2006-03-22T07:41:48Z
last-modified:  2020-12-16T13:32:15Z
source:         RIPE

role:           CoProSys Tech-c
address:        CoProSys, a.s.
address:        NA KOPCI 239
address:        CHRUDIM IV
address:        537 05
address:        CZECH REPUBLIC
phone:          +420 469 775 775
fax-no:         +420 255 701 343
e-mail:         hostmaster@coprosys.cz
abuse-mailbox:  abuse@coprosys.cz
admin-c:        VJ238-RIPE
tech-c:         AK12925-RIPE
nic-hdl:        CPST1-RIPE
mnt-by:         COPROSYS-MNT
created:        2006-08-09T15:47:32Z
last-modified:  2020-04-29T16:06:08Z
source:         RIPE

route:          178.23.232.0/21
descr:          CoProSys a.s.
origin:         AS39906
mnt-by:         COPROSYS-MNT
created:        2010-04-28T12:07:49Z
last-modified:  2010-04-28T12:07:49Z
source:         RIPE

Hosted domains

There are 14 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
178.23.232.81	coprosys.cz	7
178.23.232.41	krepove-povleceni.cz	6
178.23.236.20	chciboty.cz	1
178.23.232.84	domatv.cz	1

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

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Pingable IPs

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

IP Address	ASN	Details
178.23.239.18	AS39906 CoProSys a.s.	`0.42ms` from Prague, CZ
178.23.233.193	AS39906 CoProSys a.s.	`0.40ms` from Prague, CZ
178.23.236.129	AS39906 CoProSys a.s.	`0.43ms` from Prague, CZ
178.23.232.134	AS39906 CoProSys a.s.	`0.41ms` from Prague, CZ
178.23.234.134	AS39906 CoProSys a.s.	`0.50ms` 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
178.91.89.181	AS9198 JSC Kazakhtelecom	`7.39ms` from Almaty, KZ
174.76.97.37	AS22773 Cox Communications Inc.	`5.30ms` from Ashburn, US
174.80.245.5	AS20115 Charter Communications LLC	`9.67ms` from Atlanta, US
211.136.61.101	AS56048 China Mobile Communicaitons Corporation	`0.60ms` from Beijing, CN
209.202.253.5	AS6354 Lycos, Inc.	`1.80ms` from Boston, US
149.75.198.117	AS6079 RCN	`5.28ms` from Chicago, US
76.150.48.85	AS7922 Comcast Cable Communications, LLC	`5.63ms` from Chicago, US
217.231.142.149	AS3320 Deutsche Telekom AG	`2.26ms` from Duesseldorf, DE
18.153.173.5	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
79.243.62.5	AS3320 Deutsche Telekom AG	`10.05ms` from Frankfurt am Main, DE
39.172.29.149	AS56041 China Mobile communications corporation	`5.30ms` from Hangzhou, CN
94.237.120.133	AS202053 UpCloud Ltd	`0.78ms` from London, GB
188.30.228.133	AS206067 Hutchison 3G UK Limited	`9.32ms` from London, GB
35.230.138.21	AS396982 Google LLC	`0.10ms` from London, GB
80.39.148.117	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.04ms` from Madrid, ES
12.144.68.5	AS7018 AT&T Enterprises, LLC	`9.24ms` from Miami, US
69.249.253.53	AS7922 Comcast Cable Communications, LLC	`7.42ms` from New York City, US
60.46.209.69	AS4713 NTT Communications Corporation	`10.08ms` from Osaka, JP
192.169.156.197	AS26496 GoDaddy.com, LLC	`0.84ms` from Phoenix, US
186.101.155.197	AS27947 Telconet S.A	`1.72ms` from Quito, EC
69.170.47.133	AS14265 TPx Communications	`3.26ms` from San Jose, US
107.175.196.101	AS36352 HostPapa	`0.16ms` from San Jose, US
24.87.103.5	AS6327 Shaw Communications Inc.	`6.60ms` from Seattle, US
77.218.34.5	AS1257 Tele2 Sverige AB	`0.99ms` from Stockholm, SE
102.28.234.245	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`17.75ms` from Tunis, TN

Traceroute

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

traceroute -a -n -q1 -f4 -m10 178.23.237.208

traceroute to 178.23.237.208 (178.23.237.208): 10 hops max, 52 byte packets

4 [AS5578] 62.168.90.141 0.69 ms

5 [AS5578] 62.168.99.154 0.748 ms

6 [] 91.210.16.187 5.838 ms

7 [AS39906] 178.23.233.237 6.511 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Bratislava, SK

On September 4th 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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