81.0.254.0/23

AS15685 · CASABLANCA INT a.s.

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Summary

Country	Czechia
Domain	casablanca.cz
ASN	AS15685
Registry	RIPE
ID	CZ-CASABLANCA-20011214

WHOIS Details

inetnum:        81.0.254.0 - 81.0.255.255
org:            ORG-CI1-RIPE
netname:        CZ-CASABLANCA-20011214
descr:          PROVIDER LIR
country:        CZ
admin-c:        JH1771-RIPE
admin-c:        CASA3-RIPE
tech-c:         JH1771-RIPE
tech-c:         CASA3-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         JH1771-RIPE-MNT
mnt-lower:      CASABLANCA-RIPE-MNT
mnt-lower:      JH1771-RIPE-MNT
mnt-routes:     JH1771-RIPE-MNT
created:        2022-07-28T08:08:25Z
last-modified:  2022-07-28T08:08:25Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        CASA3-RIPE
abuse-org:      ORG-CI1-RIPE

organisation:   ORG-CI1-RIPE
org-name:       CASABLANCA INT a.s.
country:        CZ
org-type:       LIR
address:        Vinohradska 2396/184 Vinohrady
address:        130 00
address:        Prague 3
address:        CZECH REPUBLIC
phone:          +420270000270
fax-no:         +420270000277
e-mail:         [email protected]
admin-c:        JH1771-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        JH1771-RIPE-MNT
notify:         [email protected]
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         JH1771-RIPE-MNT
abuse-c:        CASA3-RIPE
created:        2004-04-17T11:04:09Z
last-modified:  2025-07-30T13:04:16Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        CASA3-RIPE
abuse-org:      undefined

role:           Casablanca INT RIPE manager
address:        Casablanca INT
address:        Vinohradska 184, Prague 3 - 130 52
address:        Czech republic
phone:          +420 270 000 270
fax-no:         +420 270 000 277
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        JH1771-RIPE
tech-c:         JH1771-RIPE
notify:         [email protected]
nic-hdl:        CASA3-RIPE
created:        2005-09-05T10:42:10Z
last-modified:  2015-07-03T11:19:49Z
source:         RIPE
mnt-by:         CASABLANCA-CORE-MNT

person:         Jan Hampl
address:        Casablanca INT s.r.o.
address:        Vinohradska 184
address:        130 52 Praha 3
address:        The Czech Republic
phone:          +420 270 000 262
fax-no:         +420 270 000 277
e-mail:         [email protected]
nic-hdl:        JH1771-RIPE
notify:         [email protected]
created:        2003-02-28T14:37:38Z
last-modified:  2015-07-13T11:04:26Z
source:         RIPE
mnt-by:         JH1771-RIPE-MNT

route:          81.0.254.0/23
descr:          Casablanca INT
origin:         AS15685
mnt-by:         CASABLANCA-CORE-MNT
created:        2020-04-13T14:52:27Z
last-modified:  2020-04-13T14:52:27Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.0.0.0/16

Range	ASN	Company	Num of IPs
81.0.0.0/18	AS15704	XTRA TELECOM S.A.	16,384
81.0.128.0/18	AS2116	GLOBALCONNECT AS	16,384
81.0.192.0/22	AS15685	CASABLANCA INT a.s.	1,024
81.0.248.0/23	AS51167	Contabo GmbH	512
81.0.124.0/23	AS12301	Invitech ICT Services Kft.	512
81.0.88.0/23	AS12301	Invitech ICT Services Kft.	512
81.0.96.0/23	AS12301	Invitech ICT Services Kft.	512
81.0.242.0/23	AS204383	CASABLANCA INT a.s.	512
81.0.108.0/23	AS20845	DIGI - INVITEL pool	512
81.0.122.0/23	AS20845	DIGI - INVITEL pool	512
81.0.126.0/23	AS20845	DIGI - INVITEL pool	512
81.0.98.0/23	AS20845	DIGI - INVITEL pool	512
81.0.210.0/23	AS21430	WIA spol. s.r.o.	512
81.0.244.0/23	AS21430	WIA spol. s.r.o.	512
81.0.218.0/23	AS51167	Contabo GmbH	512
81.0.220.0/23	AS51167	Contabo GmbH	512
81.0.246.0/23	AS51167	Contabo GmbH	512
81.0.229.0/24	AS21430	WIA spol. s.r.o.	256
81.0.68.0/24	AS12301	Egomnet Kft.	256
81.0.119.0/24	AS12301	Data center	256
81.0.104.0/24	AS12301	Datacenter Hosting Internet	256
81.0.97.0/24	AS12301	Net-Tech Consulting Kft.	256
81.0.67.0/24	AS12301	Euroweb Internet Service Provider	256
81.0.199.0/24	AS15685	CASABLANCA INT a.s.	256
81.0.217.0/24	AS15685	CASABLANCA INT a.s.	256
81.0.226.0/24	AS15685	NETHOST s.r.o.	256
81.0.228.0/24	AS15685	CASABLANCA INT a.s.	256
81.0.250.0/24	AS15685	CASABLANCA INT a.s.	256
81.0.227.0/24	AS21430	WIA spol. s.r.o.	256
81.0.124.0/24	AS12301	Deploy Is Kft.	256
81.0.230.0/24	AS204383	CASABLANCA INT a.s.	256

Hosted domains

There are 187 domain names hosted across 16 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.0.254.108	cisarskymlyn.com	155
81.0.254.139	tokebu.cz	6
81.0.254.234	protank-dynamics.eu	5
81.0.254.145	videostop.cz	4
81.0.254.75	prehledskol.cz	3
81.0.254.54	1sex-sex-sex.com	3
81.0.254.148	web1.cz	2
81.0.254.109	finepfs.sk	1
81.0.254.138	sedmikrasky.cz	1
81.0.254.53	eankatalog.cz	1
81.0.254.51	resthosting.cz	1
81.0.254.134	atacon.cz	1
81.0.254.1	kartamehosrdce.cz	1
81.0.254.229	porovnej.cz	1
81.0.254.152	fire-show.cz	1
81.0.254.33	adaptogen.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

Read more

Pingable IPs

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

IP Address	ASN	Details
81.0.255.110	AS15685 CASABLANCA INT a.s.	`0.19ms` from Prague, CZ
81.0.254.126	AS15685 CASABLANCA INT a.s.	`0.24ms` 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
222.131.165.135	AS4808 China Unicom Beijing Province Network	`3.54ms` from Beijing, CN
131.239.4.119	AS46887 Crown Castle Fiber LLC	`3.05ms` from Boston, US
98.121.9.215	AS11426 Charter Communications Inc	`5.10ms` from Charlotte, US
168.233.106.231	AS397074 Marshalls	`1.68ms` from Denver, US
141.125.156.151	AS36351 IBM Cloud	`1.36ms` from London, GB
155.198.136.119	AS786 Jisc Services Limited	`1.32ms` from London, GB
47.147.142.247	AS5650 Frontier Communications of America, Inc.	`2.31ms` from Los Angeles, US
82.71.18.167	AS13037 Zen Internet Ltd	`1.60ms` from Manchester, GB
87.240.12.39	AS8615 "Central Telegraph" Public Joint-stock Company	`1.83ms` from Moscow, RU
221.6.162.119	AS4837 CHINA UNICOM China169 Backbone	`3.19ms` from Nanjing, CN
73.230.193.87	AS7922 Comcast Cable Communications, LLC	`18.89ms` from Reston, US
180.228.228.87	AS17858 LG POWERCOMM	`4.89ms` from Seoul, KR
27.235.92.199	AS4766 Korea Telecom	`2.29ms` from Seoul, KR
126.116.70.231	AS17676 SoftBank Corp.	`4.80ms` from Tokyo, JP
153.170.56.39	AS4713 NTT DOCOMO BUSINESS,Inc.	`15.61ms` from Tokyo, JP
182.116.250.55	AS4837 CHINA UNICOM China169 Backbone	`4.94ms` from Zhengzhou, CN
122.137.120.39	AS4837 CHINA UNICOM China169 Backbone	`3.26ms` from Changchun, CN
34.249.22.103	AS16509 Amazon.com, Inc.	`0.09ms` from Dublin, IE
107.4.59.183	AS7922 Comcast Cable Communications, LLC	`8.60ms` from Flint, US
168.105.23.87	AS6360 University of Hawaii	`5.81ms` from Honolulu, US
158.220.123.7	AS51167 Contabo GmbH	`0.21ms` from Lauterbourg, FR
24.230.51.23	AS11232 Midcontinent Communications	`11.81ms` from Minneapolis, US
92.127.166.103	AS12389 PJSC Rostelecom	`0.98ms` from Novosibirsk, RU
201.146.42.119	AS8151 UNINET	`10.08ms` from Phoenix, US
52.21.31.119	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US

Traceroute

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

traceroute -a -n -q1 -f2 81.0.255.217

traceroute to 81.0.255.217 (81.0.255.217): 64 hops max, 52 byte packets

2 [] 91.210.16.15 0.303 ms

3 [AS15685] 81.0.255.217 0.228 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On December 14th 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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