217.197.144.0/20

AS42908 · ORIGINAL AS CZ-NORDICTELECOMREGIONAL

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Summary

Country	Czechia
Domain	o2.cz
ASN	AS42908
Registry	RIPE
ID	CZ-CZNET-20041021

WHOIS Details

inetnum:        217.197.144.0 - 217.197.159.255
netname:        CZ-CZNET-20041021
country:        CZ
org:            ORG-STaN1-RIPE
admin-c:        VAKO1-RIPE
tech-c:         CZO2-RIPE
status:         ALLOCATED PA
mnt-by:         AS5610-MTN
mnt-by:         RIPE-NCC-HM-MNT
created:        2025-04-01T07:33:38Z
last-modified:  2025-04-01T07:33:38Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        AR14410-RIPE
abuse-org:      ORG-STaN1-RIPE

organisation:   ORG-STaN1-RIPE
org-name:       O2 Czech Republic, a.s.
country:        CZ
org-type:       LIR
address:        Za Brumlovkou 266/2
address:        140 22
address:        Praha 4 - Michle
address:        CZECH REPUBLIC
phone:          +420 2 71466184
fax-no:         +420 2 71464414
e-mail:         [email protected]
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         CZO2-RIPE
abuse-c:        AR14410-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AS5610-MTN
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5610-MTN
created:        2004-04-17T11:04:17Z
last-modified:  2020-12-16T12:31:56Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        AR14410-RIPE
abuse-org:      undefined

role:           5610-Tech-and-Admin
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PSC 140 22
e-mail:         [email protected]
nic-hdl:        CZO2-RIPE
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         VAKO1-RIPE
tech-c:         HVJI1-RIPE
abuse-mailbox:  [email protected]
org:            ORG-STaN1-RIPE
mnt-by:         AS5610-MTN
created:        2016-02-18T09:58:30Z
last-modified:  2018-04-20T10:44:21Z
source:         RIPE

person:         Vaclav Kordula
address:        O2 Czech Republic, a.s.
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PS? 140 22
address:        Czech Republic
phone:          +420 2 714668845
e-mail:         [email protected]
nic-hdl:        VAKO1-RIPE
notify:         [email protected]
mnt-by:         AS5610-MTN
created:        1970-01-01T00:00:00Z
last-modified:  2016-02-12T13:32:30Z
source:         RIPE

route:          217.197.144.0/20
origin:         AS42908
mnt-by:         mnt-nordictelecom
mnt-by:         AS5610-MTN
created:        2025-02-04T19:56:22Z
last-modified:  2025-04-01T10:56:15Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 217.197.0.0/16

Range	ASN	Company	Num of IPs
217.197.224.0/20	AS24739	JSC Severen-Telecom	4,096
217.197.112.0/20	AS20655	e-Style ISP LLC	4,096
217.197.80.0/20	AS29670	Lehrter Str. 53	4,096
217.197.32.0/20	AS34080	MIRAMO spol. s.r.o.	4,096
217.197.0.0/20	AS5495	Saint Petersburg State University	4,096
217.197.176.0/20	AS20845	DIGI Tavkozlesi es Szolgaltato Kft.	4,096
217.197.136.0/21	AS42560	Telemach BH d.o.o. Sarajevo	2,048
217.197.128.0/21	AS15576	Cirrax GmbH	2,048
217.197.56.0/22	AS3301	Ide och ResursCentrum AB	1,024
217.197.164.0/22	AS41869	Blix Fiber	1,024
217.197.172.0/22	AS201776	Miranda-Media Ltd	1,024
217.197.60.0/22	AS3301	Local serviceprovider	1,024
217.197.162.0/24	AS212238	Think Huge Ltd	256
217.197.97.0/24	AS212552	Deployish Limited	256
217.197.111.0/24	AS29119	MISMELINK NETWORKS, SL	256
217.197.171.0/24	AS46450	Wired ISP Inc.	256
217.197.22.0/24	AS51487	DONNALIVE	256
217.197.29.0/24	AS51487	ISP MOLINA	256
217.197.30.0/24	AS51487	DONNA LIVE S.COOP.	256
217.197.108.0/24	AS59877	VA TELECOM SAS	256
217.197.170.0/24	AS6079	Wired ISP Inc.	256
217.197.54.0/24	AS1257	Ljungby Energi AB Box 262 341 25 Ljungby	256
217.197.169.0/24	AS7015	Wired ISP Inc.	256
217.197.109.0/24	AS197883	Serinya Telecom SAS	256
217.197.110.0/24	AS198126	LG-NET SAS	256
217.197.105.0/24	AS199793	Bank Eskhata OJSC	256
217.197.163.0/24	AS199967	Think Huge Ltd	256
217.197.102.0/24	AS201990	Jakub Bartlomiej Osuch trading as Techgroup	256
217.197.103.0/24	AS203020	truview LLC	256
217.197.106.0/24	AS204471	2S Computers SRL	256
217.197.100.0/24	AS205219	WISP.ONE S.R.L.	256
217.197.107.0/24	AS210644	ROST LLC	256
217.197.98.0/24	AS211611	Thecon SRL	256
217.197.160.0/24	AS212238	Think Huge Ltd	256
217.197.161.0/24	AS212238	Think Huge Ltd	256

Hosted domains

There are 79 domain names hosted across 29 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
217.197.152.167	ceskepivo.com	12
217.197.152.168	skiatlas.eu	10
217.197.159.36	mikroregion-kromerizsko.cz	9
217.197.154.34	easytrans.cz	9
217.197.157.238	chvalcov.cz	3
217.197.152.33	formy-pneumatiky-kontejnery.cz	3
217.197.152.130	elkoep.com.ua	3
217.197.159.38	utulekkromeriz.cz	3
217.197.158.116	coptel.cz	2
217.197.144.137	hydor.cz	2
217.197.152.148	rftouch.hu	2
217.197.148.9	ka-ak.cz	2
217.197.154.27	mactac.sk	2
217.197.149.135	sftattoo.cz	2
217.197.152.254	falconet.cz	1
217.197.152.172	altivar.cz	1
217.197.159.40	socialnisluzbykm.cz	1
217.197.152.173	vydavatelstvibastan.cz	1
217.197.152.163	aukcerealit.eu	1
217.197.154.143	zahradni-architektura.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

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

IP Address	ASN	Details
217.197.154.49	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.87ms` from Prague, CZ
217.197.155.129	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`6.63ms` from Prague, CZ
217.197.158.149	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.86ms` from Prague, CZ
217.197.159.2	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`5.83ms` from Prague, CZ
217.197.151.141	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.86ms` from Prague, CZ
217.197.145.1	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.85ms` from Prague, CZ
217.197.147.13	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.86ms` from Prague, CZ
217.197.157.233	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.87ms` from Prague, CZ
217.197.156.1	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.69ms` from Prague, CZ
217.197.144.45	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.87ms` 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
105.109.8.196	AS36947 Telecom Algeria	`12.59ms` from Algiers, DZ
134.102.123.244	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`12.98ms` from Berlin, DE
54.70.219.100	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
173.76.133.196	AS701 Verizon Business	`1.32ms` from Boston, US
148.70.186.244	AS45090 Shenzhen Tencent Computer Systems Company Limited	`3.76ms` from Chengdu, CN
63.32.240.148	AS16509 Amazon.com, Inc.	`0.10ms` from Dublin, IE
62.159.100.132	AS3320 Deutsche Telekom AG	`1.53ms` from Duesseldorf, DE
185.206.226.116	AS9009 M247 Europe SRL	`0.10ms` from Frankfurt am Main, DE
207.74.78.4	AS237 Merit Network Inc.	`9.82ms` from Grand Rapids, US
103.177.39.244	AS135906 BOOKING247 COMPANY LIMITED	`0.29ms` from Hanoi, VN
179.59.176.4	AS28024 Nuevatel PCS de Bolivia S.A.	`18.09ms` from La Paz, BO
3.11.198.116	AS16509 Amazon.com, Inc.	`0.19ms` from London, GB
155.198.190.100	AS786 Jisc Services Limited	`1.19ms` from London, GB
194.243.110.36	AS3269 Telecom Italia S.p.A.	`5.37ms` from Milan, IT
47.18.174.4	AS6128 Cablevision Systems Corp.	`2.48ms` from New York City, US
101.140.76.36	AS17511 OPTAGE Inc.	`2.15ms` from Osaka, JP
153.231.1.228	AS4713 NTT DOCOMO BUSINESS,Inc.	`4.15ms` from Osaka, JP
176.181.83.68	AS5410 Bouygues Telecom SA	`11.93ms` from Paris, FR
187.210.5.116	AS8151 UNINET	`3.29ms` from Santiago de Queretaro, MX
211.169.98.100	AS3786 LG DACOM Corporation	`7.05ms` from Seoul, KR
221.146.1.100	AS4766 Korea Telecom	`1.38ms` from Seoul, KR
213.135.35.20	AS15665 Instytut Geofizyki PAN	`9.95ms` from Warsaw, PL
43.209.218.228	AS16509 Amazon.com, Inc.	`1.59ms` from Bangkok, TH
81.244.70.148	AS5432 Proximus NV	`1.28ms` from Brussels, BE
27.15.138.148	AS4837 CHINA UNICOM China169 Backbone	`7.29ms` from Chongqing, CN

Traceroute

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

traceroute -a -n -q1 -f3 217.197.158.69

traceroute to 217.197.158.69 (217.197.158.69): 64 hops max, 52 byte packets

3 [AS5610] 194.228.77.51 0.727 ms

4 [AS42908] 217.197.158.69 0.895 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On December 20th 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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