217.170.96.0/20

AS42908 · ORIGINAL AS CZ-NORDICTELECOMREGIONAL

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Summary

Country	Czechia
Domain	o2.cz
ASN	AS42908
Registry	RIPE
ID	CZ-CZNET-20081121

WHOIS Details

inetnum:        217.170.96.0 - 217.170.111.255
netname:        CZ-CZNET-20081121
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:        2025-04-01T07:33:39Z
last-modified:  2025-04-01T07:33:39Z
source:         RIPE
abuse-email:    abuse@o2.cz
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:         marek.vogel@o2.cz
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:    abuse@o2.cz
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:         router@o2.cz
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:  abuse@o2.cz
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:         vaclav.kordula@o2.cz
nic-hdl:        VAKO1-RIPE
notify:         vaclav.kordula@o2.cz
mnt-by:         AS5610-MTN
created:        1970-01-01T00:00:00Z
last-modified:  2016-02-12T13:32:30Z
source:         RIPE

route:          217.170.96.0/20
origin:         AS42908
mnt-by:         mnt-nordictelecom
mnt-by:         AS5610-MTN
created:        2025-02-04T19:55:14Z
last-modified:  2025-04-01T10:55:11Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 217.170.0.0/16

Range	ASN	Company	Num of IPs
217.170.0.0/19	AS24785	Broadband Hosting B.V.	8,192
217.170.64.0/19	AS20597	PJSC Vimpelcom	8,192
217.170.32.0/19	AS35753	Etihad Salam Telecom CJSC	8,192
217.170.208.0/20	AS8905	Digit One LLC	4,096
217.170.192.0/20	AS34989	ServeTheWorld AS	4,096
217.170.112.0/20	AS35401	AO Tele-Service Tula	4,096
217.170.128.0/20	AS49788	Absnet AS	4,096
217.170.4.0/22	AS42093	Windonet B.V.	1,024
217.170.242.0/23	AS51469	Petiak LTE Clients	512
217.170.244.0/23	AS51469	Petiak PPPOE Clients	512
217.170.246.0/23	AS51469	Petiak PPPOE clients	512
217.170.248.0/23	AS51469	Petiak Enterprise Clients	512
217.170.250.0/23	AS51469	Petiak Enterprise Clients	512
217.170.252.0/23	AS51469	Petiak Network Infrastructure	512
217.170.240.0/23	AS51469	Petiak LTE Clients	512
217.170.16.0/23	AS29001	DMA Computer Services	512
217.170.224.0/24	AS20658	Computer Design S.r.l.- Santo Stefano Ticino - Milan	256
217.170.0.0/24	AS24785	Open Peering	256
217.170.10.0/24	AS24785	Joint Transit	256
217.170.18.0/24	AS24785	Joint Transit	256
217.170.20.0/24	AS24785	Joint Transit	256
217.170.19.0/24	AS24785	Joint Transit	256
217.170.23.0/24	AS24785	Joint Transit	256
217.170.9.0/24	AS24785	Joint Transit	256
217.170.1.0/24	AS25459	NedZone hosting	256
217.170.87.0/24	AS3235	111250 Russia SOVINTEL/EDN et ELTEL	256
217.170.8.0/24	AS34210	Flow Traders B.V.	256
217.170.21.0/24	AS35470	KDIS	256
217.170.226.0/24	AS20658	Computer Design S.r.l.- Corbetta - Milan - Italy	256
217.170.15.0/24	AS5418	NerdNet Foundation	256

Hosted domains

There are 124 domain names hosted across 34 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
217.170.99.2	atcimport.eu	20
217.170.99.12	sf-milbos.cz	11
217.170.99.4	potiskzapalovacu.cz	10
217.170.101.134	fun-charter.cz	8
217.170.99.20	larcanashops.cz	7
217.170.103.134	balkantrip.cz	7
217.170.99.6	kompletelektro.cz	6
217.170.99.21	vzdelavej-se.cz	5
217.170.101.154	studie-olomouc.cz	5
217.170.99.3	navit.cz	4
217.170.99.5	largokab.cz	4
217.170.101.208	sla.ovh	3
217.170.101.36	ntemp.cz	3
217.170.97.185	choma.tech	3
217.170.101.133	mirios.cz	3
217.170.99.23	17th-meridian.cz	3
217.170.99.10	autobajer.cz	2
217.170.99.19	cablebox.cz	2
217.170.100.162	hnevotin.eu	2
217.170.101.132	spelsan-ochranadreva.sk	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

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

IP Address	ASN	Details
217.170.96.24	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.79ms` from Prague, CZ
217.170.99.1	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.89ms` from Prague, CZ
217.170.98.241	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.89ms` from Prague, CZ
217.170.105.242	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`4.98ms` from Prague, CZ
217.170.107.5	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`4.90ms` from Prague, CZ
217.170.100.105	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.86ms` from Prague, CZ
217.170.103.153	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`5.22ms` from Prague, CZ
217.170.97.253	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.87ms` from Prague, CZ
217.170.101.125	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.88ms` from Prague, CZ
217.170.102.61	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.85ms` from Prague, CZ
217.170.104.157	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`0.85ms` from Prague, CZ
217.170.106.168	AS42908 ORIGINAL AS CZ-NORDICTELECOMREGIONAL	`4.73ms` 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
178.224.222.244	AS50266 Odido Netherlands B.V.	`3.47ms` from Amsterdam, NL
41.71.49.132	AS37053 RSAWEB (PTY) LTD	`1.49ms` from Cape Town, ZA
104.138.223.68	AS11426 Charter Communications Inc	`8.79ms` from Charlotte, US
165.233.4.36	AS7020 Business Connexion Communications	`1.03ms` from Johannesburg, ZA
124.235.61.228	AS4134 CHINANET-BACKBONE	`8.45ms` from Liaoyang, CN
110.141.223.164	AS1221 Telstra Limited	`4.48ms` from Melbourne, AU
96.126.161.100	AS401152 Ace Data Centers II, L.L.C.	`0.12ms` from Orem, US
91.220.27.100	AS206379 Anil Information Systems SAS	`0.46ms` from Paris, FR
95.54.66.228	AS12389 PJSC Rostelecom	`17.85ms` from Saint Petersburg, RU
23.214.42.164	AS16625 Akamai Technologies, Inc.	`0.08ms` from Sydney, AU
20.220.192.196	AS8075 Microsoft Corporation	`0.17ms` from Toronto, CA
190.77.94.212	AS8048 CANTV Servicios, Venezuela	`16.97ms` from Willemstad, CW
223.214.30.36	AS4134 CHINANET-BACKBONE	`8.56ms` from Wuhan, CN
196.191.116.180	AS24757 Ethio Telecom	`15.22ms` from Addis Ababa, ET
202.80.238.148	AS45458 SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX	`1.59ms` from Bangkok, TH
76.16.57.4	AS7922 Comcast Cable Communications, LLC	`4.64ms` from Chicago, US
71.211.238.228	AS209 CenturyLink Communications, LLC	`1.86ms` from Denver, US
115.247.173.68	AS55836 Reliance Jio Infocomm Limited	`8.24ms` from Hyderabad, IN
41.30.193.244	AS29975 Vodacom	`8.56ms` from Johannesburg, ZA
86.143.192.212	AS2856 British Telecommunications PLC	`3.48ms` from London, GB
34.13.16.180	AS396982 Google LLC	`0.11ms` from London, GB
18.100.31.164	AS16509 Amazon.com, Inc.	`5.61ms` from Madrid, ES
81.35.130.52	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.82ms` from Madrid, ES
80.142.32.4	AS3320 Deutsche Telekom AG	`3.48ms` from Nuernberg, DE
27.134.175.132	AS7522 STNet, Incorporated	`7.80ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 217.170.99.1

traceroute to 217.170.99.1 (217.170.99.1): 64 hops max, 52 byte packets

1 [AS42473] 178.255.154.92 0.426 ms

2 *

3 [AS5610] 194.228.77.51 0.674 ms

4 [AS42908] 217.170.99.1 0.909 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On January 19th 2026

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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