147.231.0.0/16

AS2852 · CESNET z.s.p.o.

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Summary

Country	Czechia
Domain	btpraha.cz
ASN	AS2852
Registry	RIPE
ID	CAS-TCZ

WHOIS Details

inetnum:        147.231.0.0 - 147.231.255.255
netname:        CAS-TCZ
descr:          Praha
country:        CZ
org:            ORG-AoSo1-RIPE
admin-c:        AVCR1-RIPE
tech-c:         AVCR1-RIPE
status:         LEGACY
mnt-by:         TENCZ-MNT
mnt-by:         RIPE-NCC-LEGACY-MNT
remarks:        Please report network abuse -> abuse@cas.cz
created:        2006-05-18T10:46:16Z
last-modified:  2016-04-14T08:33:34Z
source:         RIPE
sponsoring-org: ORG-CA9-RIPE
abuse-email:    abuse@cas.cz
abuse-c:        AVCR1-RIPE
abuse-org:      ORG-CA9-RIPE

organisation:   ORG-AoSo1-RIPE
org-name:       Czech Academy of Sciences
country:        CZ
org-type:       OTHER
address:        Czech Academy of Sciences
address:        Akademie ved Ceske republiky
address:        Narodni 3
address:        Praha 1
address:        117 20
address:        The Czech Republic
phone:          +420 221 403 111
fax-no:         +420 224 240 512
e-mail:         info@cas.cz
admin-c:        AVCR1-RIPE
tech-c:         AVCR1-RIPE
abuse-c:        AVCR1-RIPE
ref-nfy:        Indra@ssc.cas.cz
mnt-ref:        TENCZ-MNT
mnt-by:         TENCZ-MNT
mnt-by:         TENCZ-RPKI-MNT
created:        2011-01-19T14:40:00Z
last-modified:  2022-12-01T17:30:58Z
source:         RIPE
abuse-email:    abuse@cas.cz
abuse-c:        AVCR1-RIPE
abuse-org:      undefined

role:           Akademie ved Ceske republiky Network Admins
address:        Akademie ved Ceske republiky
address:        Narodni 3
address:        Praha 1
address:        117 20
address:        The Czech Republic
phone:          +420 221 403 111
fax-no:         +420 224 240 572
abuse-mailbox:  abuse@cas.cz
org:            ORG-AoSo1-RIPE
admin-c:        PV1028-RIPE
admin-c:        MI477-RIPE
admin-c:        JH31557-RIPE
tech-c:         PV1028-RIPE
tech-c:         MI477-RIPE
tech-c:         PV3710-RIPE
e-mail:         ripe@cas.cz
nic-hdl:        AVCR1-RIPE
mnt-by:         TENCZ-MNT
created:        2013-10-25T12:46:57Z
last-modified:  2025-06-12T14:27:09Z
source:         RIPE

route:          147.231.0.0/16
origin:         AS2852
mnt-by:         TENCZ-RPKI-MNT
mnt-by:         AS2852-MNT
created:        2024-04-07T19:54:59Z
last-modified:  2024-04-07T19:54:59Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 147.0.0.0/8

Range	ASN	Company	Num of IPs
147.65.0.0/16	AS262829	Assoc do Inst Nac de Matematica Pura e Aplicada	65,536
147.186.0.0/16	AS2799	Polismyndigheten	65,536
147.226.0.0/16	AS20452	Ball State University	65,536
147.192.0.0/16	AS2527	Sony Network Communications Inc.	65,536
147.180.0.0/16	AS19399	Region Stockholm	65,536
147.144.0.0/16	AS2152	City College of San Francisco	65,536
147.171.0.0/16	AS1942	Universite Grenoble Alpes	65,536
147.219.0.0/16	AS20115	Charter Communications LLC	65,536
147.99.0.0/16	AS2471	INRAE	65,536
147.137.0.0/16	AS20214	Telematics International	65,536
147.112.0.0/16	AS1770	NO-RINGSTAD	65,536
147.26.0.0/16	AS18777	Texas State University	65,536
147.111.0.0/16	AS199791	Postboks 237	65,536
147.196.0.0/16	AS199541	Eurocontrol Experimental Centre	65,536
147.118.0.0/16	AS10370	Northwest Aerospace Training Corporation	65,536
147.115.0.0/16	AS16509	Amazon.com, Inc.	65,536
147.80.0.0/16	AS1761	Texas Department of Human Resources	65,536
147.108.0.0/16	AS16509	Amazon.com, Inc.	65,536
147.105.0.0/16	AS22522	United Launch Alliance, LLC	65,536
147.205.0.0/16	AS16509	Amazon.com, Inc.	65,536
147.13.0.0/16	AS197425	Saab AB	65,536
147.87.0.0/16	AS200233	Berner Fachhochschule	65,536
147.35.0.0/16	AS1580	Headquarters, USAISC	65,536
147.127.0.0/16	AS1715	Ecole Nationale Superieure d'Electronique, d'Electrotechnique,	65,536
147.209.0.0/16	AS17750	ENERGEX LIMITED	65,536
147.222.0.0/16	AS11649	Gonzaga University	65,536
147.70.0.0/16	AS19899	Miami Dade College	65,536
147.73.0.0/16	AS1207	Pittsburgh Supercomputing Center	65,536
147.11.0.0/16	AS16920	Wind River Systems, Inc.	65,536
147.252.0.0/16	AS1213	Metropolitan Area Network	65,536
147.69.0.0/16	AS1221	Telstra Limited	65,536
147.47.0.0/16	AS1237	Seoul National University	65,536
147.122.0.0/16	AS137	SS - SISSA Trieste	65,536
147.128.0.0/16	AS158	Ericsson Inc.	65,536
147.83.0.0/16	AS13041	Universitat Politecnica de Catalunya	65,536
147.91.0.0/16	AS13092	Akademska mreza Republike Srbije - AMRES	65,536
147.211.0.0/16	AS132029	Department of Finance and Deregulation	65,536
147.153.0.0/16	AS14041	Metropolitan State University of Denver	65,536
147.2.0.0/16	AS16509	Amazon.com, Inc.	65,536
147.173.0.0/16	AS1942	C.N.R.S. - Delegation regionale Alpes	65,536
147.176.0.0/16	AS14398	Autodesk Ltd. Japan	65,536
147.36.0.0/16	AS1559	Headquarters, USAISC	65,536
147.194.0.0/16	AS15128	Comwave Telecom Inc.	65,536
147.44.0.0/16	AS1759	StoraEnso Oyj	65,536
147.238.0.0/16	AS1540	Headquarters, USAISC	65,536
147.34.0.0/16	AS13541	Siemens Industry Software Inc.	65,536
147.10.0.0/16	AS135887	Telstra Limited	65,536
147.0.0.0/16	AS10796	Charter Communications Inc	65,536
147.203.0.0/16	AS11320	ALPHAREL/optigraphics Corporation	65,536
147.228.0.0/16	AS2852	Plzen	65,536

Hosted domains

There are 430 domain names hosted across 155 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
147.231.163.211	cas.cz	65
147.231.63.10	ovidiovy-promeny.cz	19
147.231.28.8	clustermeeting2021.eu	17
147.231.201.189	terradrought.eu	14
147.231.38.26	geomorfologie.eu	13
147.231.64.23	heritage-route.com	11
147.231.163.247	shakespeare-academia.cz	10
147.231.164.100	tg-masaryk.cz	9
147.231.80.30	literarniveda.cz	8
147.231.27.86	matca.cz	8
147.231.110.162	pladias.org	7
147.231.80.32	bohemistickykongres.cz	7
147.231.6.218	ustavinformatiky.cz	7
147.231.110.150	nasekrajina.eu	6
147.231.250.15	zivebrehy.cz	6
147.231.136.56	mfic.cz	6
147.231.150.197	zebrafish2020.org	6
147.231.164.155	cantio.cz	6
147.231.251.4	rostlinolekar.online	5
147.231.250.201	zivebrehy.cz	5

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
73.177.206.208	AS7922 Comcast Cable Communications, LLC	`10.85ms` from Ashburn, US
111.164.237.32	AS4837 CHINA UNICOM China169 Backbone	`5.62ms` from Beijing, CN
35.80.172.112	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
3.78.141.32	AS16509 Amazon.com, Inc.	`0.16ms` from Frankfurt am Main, DE
113.252.191.208	AS9304 HGC Global Communications Limited	`1.85ms` from Hong Kong, HK
91.170.46.32	AS12322 Free SAS	`5.75ms` from Paris, FR
157.136.249.32	AS2200 Renater	`1.56ms` from Paris, FR
176.166.158.144	AS5410 Bouygues Telecom SA	`6.33ms` from Paris, FR
203.220.65.176	AS7545 TPG Telecom Limited	`1.40ms` from Perth, AU
20.97.71.96	AS8075 Microsoft Corporation	`0.23ms` from San Antonio, US
81.167.2.64	AS29695 Altibox AS	`2.81ms` from Sandefjord, NO
190.89.140.0	AS270393 IPT TELECOM	`1.20ms` from Sao Paulo, BR
27.118.84.0	AS17573 SK Broadband Co Ltd	`5.77ms` from Seoul, KR
121.161.254.128	AS4766 Korea Telecom	`1.42ms` from Seoul, KR
58.96.232.208	AS55430 Starhub Ltd	`2.04ms` from Singapore, SG
154.180.202.128	AS8452 TE-AS	`7.31ms` from Cairo, EG
20.241.82.96	AS8075 Microsoft Corporation	`0.36ms` from Chicago, US
185.24.124.16	AS44558 Netonline Bilisim Sirketi LTD	`11.88ms` from Denizli, TR
164.132.216.112	AS16276 OVH SAS	`0.06ms` from Gravelines, FR
153.167.199.80	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.38ms` from Osaka, JP
187.121.40.96	AS19182 TELEFÔNICA BRASIL S.A	`1.65ms` from Osasco, BR
83.204.161.96	AS3215 Orange S.A.	`1.65ms` from Paris, FR
95.177.172.160	AS201771 ARABIAN INTERNET & COMMUNICATIONS SERVICES CO.LTD	`1.73ms` from Riyadh, SA
20.226.133.80	AS8075 Microsoft Corporation	`0.17ms` from Sao Paulo, BR
182.155.188.64	AS17809 VEE TIME CORP.	`3.52ms` from Taipei, TW

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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