178.21.184.0/21

AS202895 · TFnet s.r.o.

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Summary

Country	Czechia
Domain	tfnet.cz
ASN	AS202895
Registry	RIPE
ID	CZ-TFNETSRO-20100323

WHOIS Details

inetnum:        178.21.184.0 - 178.21.191.255
netname:        CZ-TFNETSRO-20100323
country:        CZ
org:            ORG-Ts79-RIPE
admin-c:        TF1659-RIPE
tech-c:         TF1659-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TFNET-MNT
mnt-routes:     TFNET-MNT
mnt-routes:     MNT-IJC
notify:         firma@tfnet.cz
created:        2010-03-23T09:27:36Z
last-modified:  2017-07-10T12:37:53Z
source:         RIPE
abuse-email:    abuse@tfnet.cz
abuse-c:        AR13705-RIPE
abuse-org:      ORG-Ts79-RIPE

organisation:   ORG-Ts79-RIPE
org-name:       TFnet s.r.o.
country:        CZ
org-type:       LIR
address:        Masarykova 203
address:        46822
address:        Zelezny Brod
address:        CZECH REPUBLIC
phone:          +420484350000
fax-no:         +420484356017
e-mail:         firma@tfnet.cz
abuse-c:        AR13705-RIPE
mnt-ref:        TFNET-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TFNET-MNT
created:        2008-09-25T11:35:07Z
last-modified:  2020-12-16T12:26:36Z
source:         RIPE

person:         Tomas Fichtner
address:        TFnet s.r.o.
address:        Masarykova 203
address:        Zelezny Brod
address:        46822
address:        Czech Republic
phone:          +420 484 356 017
e-mail:         firma@tfnet.cz
nic-hdl:        TF1659-RIPE
mnt-by:         TFNET-MNT
created:        2008-06-11T07:58:03Z
last-modified:  2017-10-30T22:01:24Z
source:         RIPE

route:          178.21.184.0/21
descr:          TFnet
origin:         AS202895
mnt-by:         TFNET-MNT
created:        2016-06-27T16:57:33Z
last-modified:  2016-06-27T16:57:33Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 178.21.0.0/16

Range	ASN	Company	Num of IPs
178.21.112.0/21	AS29028	DirectVPS B.V.	2,048
178.21.128.0/21	AS39783	Webhuset AS	2,048
178.21.72.0/21	AS39806	Admax AB	2,048
178.21.224.0/21	AS41549	Elektrizitaets- und Wasserwerk der Stadt Buchs SG	2,048
178.21.152.0/21	AS31621	Allegro sp. z o.o.	2,048
178.21.200.0/21	AS44473	S.T. S.r.l.	2,048
178.21.232.0/21	AS44671	Skyline Networks & Consultancy Ltd	2,048
178.21.192.0/21	AS49283	Setera Oy	2,048
178.21.88.0/21	AS39642	Sinal A/S	2,048
178.21.176.0/21	AS34659	Keyyo SA	2,048
178.21.120.0/21	AS49909	Direct One SA	2,048
178.21.88.0/21	AS50490	Sinal A/S	2,048
178.21.16.0/21	AS50673	Serverius Holding B.V.	2,048
178.21.64.0/21	AS50713	LLC Forward Telecom LTD	2,048
178.21.56.0/21	AS35454	Asitur Asistencia, S.A.	2,048
178.21.168.0/21	AS199081	Lancom Ltd.	2,048
178.21.248.0/21	AS196997	Uni-tel A/S	2,048
178.21.136.0/21	AS197480	SerczerNET Malgorzata Nienaltowska	2,048
178.21.240.0/21	AS50794	Levira AS	2,048
178.21.24.0/21	AS20483	EUROCOM Ltd.	2,048
178.21.80.0/21	AS20574	Knowit Connectivity AB	2,048
178.21.0.0/21	AS196968	Ilm-Provider UG (haftungsbeschraenkt)	2,048
178.21.14.0/23	AS49352	Reg.Ru	512
178.21.40.0/23	AS52070	Parsian Bank	512
178.21.60.0/24	AS35454	Asitur Asistencia, S.A.	256
178.21.61.0/24	AS35454	Asitur Asistencia, S.A.	256
178.21.62.0/24	AS35454	Asitur Asistencia, S.A.	256
178.21.63.0/24	AS35454	Asitur Asistencia, S.A.	256
178.21.209.0/24	AS43635	VeriFone Systems France SAS	256
178.21.9.0/24	AS49352	Reg.Ru Hosting	256
178.21.104.0/24	AS50715	SERVIABERTIS	256
178.21.105.0/24	AS50715	SERVIABERTIS	256
178.21.106.0/24	AS50715	SERVIABERTIS	256
178.21.107.0/24	AS50715	SERVIABERTIS	256
178.21.210.0/24	AS50845	VeriFone Systems France SAS	256
178.21.211.0/24	AS50845	VeriFone Systems France SAS	256
178.21.212.0/24	AS50845	VeriFone Systems France SAS	256
178.21.213.0/24	AS50845	VeriFone Systems France SAS	256
178.21.148.0/24	AS16509	regfish GmbH	256
178.21.42.0/24	AS52070	This range assigned to Parsian Bank	256
178.21.109.0/24	AS197267	Retevision I, S.A.	256
178.21.110.0/24	AS197267	Retevision I, S.A.	256
178.21.8.0/24	AS197695	Reg.Ru Hosting	256
178.21.168.0/24	AS199081	Lancom Ltd.	256
178.21.169.0/24	AS199081	Lancom Ltd.	256
178.21.171.0/24	AS199081	LANCOM LTD.	256
178.21.172.0/24	AS199081	Lancom Ltd.	256
178.21.173.0/24	AS199081	Lancom Ltd.	256
178.21.174.0/24	AS199081	Lancom Ltd.	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
178.21.184.161	AS202895 TFnet s.r.o.	`4.17ms` from Prague, CZ
178.21.187.209	AS202895 TFnet s.r.o.	`2.56ms` from Prague, CZ
178.21.191.33	AS202895 TFnet s.r.o.	`2.80ms` from Prague, CZ
178.21.185.2	AS202895 TFnet s.r.o.	`4.96ms` from Prague, CZ
178.21.186.76	AS202895 TFnet s.r.o.	`2.11ms` 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
101.242.114.117	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`8.98ms` from Beijing, CN
213.49.115.117	AS5432 Proximus NV	`2.05ms` from Brussels, BE
156.215.202.181	AS8452 TE-AS	`5.53ms` from Cairo, EG
52.210.0.37	AS16509 Amazon.com, Inc.	`0.18ms` from Dublin, IE
2.35.193.229	AS30722 Fastweb SpA	`5.46ms` from Milan, IT
191.242.38.133	AS274689 ISP SERVICOS DE INTERNET LTDA	`1.31ms` from Osasco, BR
176.165.134.69	AS5410 Bouygues Telecom SA	`2.20ms` from Paris, FR
81.126.22.165	AS3269 Telecom Italia S.p.A.	`5.56ms` from Rende, IT
65.17.213.149	AS14492 DataPipe, Inc.	`2.12ms` from Secaucus, US
211.233.60.5	AS3786 LG DACOM Corporation	`1.09ms` from Seoul, KR
114.33.127.5	AS3462 Data Communication Business Group	`2.07ms` from Taichung, TW
131.213.130.85	AS2527 Sony Network Communications Inc.	`8.56ms` from Tokyo, JP
77.61.17.149	AS1136 KPN B.V.	`1.85ms` from Amsterdam, NL
152.22.114.21	AS81 MCNC	`10.82ms` from Ashburn, US
18.217.143.21	AS16509 Amazon.com, Inc.	`0.16ms` from Columbus, US
171.232.232.149	AS7552 Viettel Group	`1.12ms` from Ho Chi Minh City, VN
89.144.111.5	AS34426 Shabakah Net	`5.65ms` from Jeddah, SA
112.7.198.197	AS24444 Shandong Mobile Communication Company Limited	`5.22ms` from Jinan, CN
81.84.188.181	AS2860 NOS COMUNICACOES, S.A.	`10.86ms` from Lisbon, PT
87.219.186.37	AS12479 Orange Espagne SA	`7.92ms` from Madrid, ES
80.252.138.149	AS21453 Flex Ltd.	`1.02ms` from Moscow, RU
14.201.250.69	AS7545 TPG Telecom Limited	`1.13ms` from Perth, AU
98.207.174.165	AS7922 Comcast Cable Communications, LLC	`5.74ms` from San Jose, US
72.0.188.149	AS4181 TDS TELECOM	`9.27ms` from Seattle, US
59.25.92.133	AS4766 Korea Telecom	`3.43ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f3 178.21.186.33

traceroute to 178.21.186.33 (178.21.186.33): 64 hops max, 52 byte packets

3 [AS13194] 185.0.20.221 1.432 ms

4 [AS202895] 178.21.186.33 2.172 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On February 7th 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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