81.201.56.0/21

AS8251 · FreeTel, s.r.o.

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Summary

Country	Czechia
Domain	pilsfree.net
ASN	AS8251
Registry	RIPE
ID	PILSFREENFX

WHOIS Details

inetnum:        81.201.56.0 - 81.201.59.255
netname:        PILSFREENFX
org:            ORG-Po8-RIPE
geoloc:         49.7477831 13.3783489
descr:          Pilsfree.net member workstations
country:        CZ
admin-c:        MUKI
tech-c:         MUKI
mnt-irt:        IRT-PILSFREE
status:         ASSIGNED PA
mnt-by:         CZNFX-MNT
created:        2007-02-24T21:51:37Z
last-modified:  2015-09-06T12:27:36Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        PFA-RIPE
abuse-org:      ORG-Po8-RIPE

organisation:   ORG-Po8-RIPE
org-name:       PilsFree, z.s.
abuse-c:        PFA-RIPE
admin-c:        muki
org-type:       OTHER
address:        Tachovska 41, 323 00 Plzen, Czech Republic
e-mail:         [email protected]
mnt-ref:        muki-mnt
mnt-by:         muki-mnt
created:        2007-09-15T21:13:43Z
last-modified:  2017-10-30T14:51:28Z
source:         RIPE

person:         Pavel Muknsnabl
address:        Tachovska 41, Plzen, CZ
e-mail:         [email protected]
phone:          +420775163264
nic-hdl:        muki
created:        2007-02-15T09:11:11Z
last-modified:  2017-10-30T21:53:57Z
source:         RIPE
mnt-by:         muki-mnt

route:          81.201.56.0/21
descr:          Neutral Free eXchange members - FreeTel alternate
origin:         AS41711
mnt-by:         CZNFX-MNT
created:        2016-11-02T08:10:39Z
last-modified:  2016-11-02T08:10:39Z
source:         RIPE

route:          81.201.56.0/21
descr:          Neutral Free eXchange members
origin:         AS8251
mnt-by:         CZNFX-MNT
created:        2007-02-05T10:56:15Z
last-modified:  2010-06-22T07:35:51Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.201.0.0/16

Range	ASN	Company	Num of IPs
81.201.224.0/20	AS12923	Wizard Computersysteme GmbH	4,096
81.201.144.0/20	AS16205	DSI GmbH Daten Service Informationssysteme	4,096
81.201.240.0/20	AS21365	MTS PJSC	4,096
81.201.0.0/20	AS25305	Albedo S.r.l.	4,096
81.201.192.0/20	AS25353	BAR Informatik AG	4,096
81.201.32.0/20	AS3320	Marschall Electronics GmbH & Co. KG	4,096
81.201.80.0/20	AS41135	Voxbone SA	4,096
81.201.176.0/20	AS41157	Oxymium SARL	4,096
81.201.208.0/20	AS57829	Iver Sverige AB	4,096
81.201.128.0/20	AS61323	ANS ACADEMY LIMITED	4,096
81.201.16.0/20	AS8359	MTS PJSC	4,096
81.201.83.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.84.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.85.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.86.0/24	AS41135	Voxbone SA	256
81.201.87.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.88.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.89.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.91.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.92.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.93.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.163.0/24	AS29575	Reuters LAN	256
81.201.164.0/24	AS29575	Reuters LAN	256
81.201.94.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.95.0/24	AS41135	Voxbone worldwide VOIP backbone	256
81.201.80.0/24	AS41135	Voxbone SA	256
81.201.82.0/24	AS41135	Voxbone worldwide VOIP backbone	256

Hosted domains

There are 221 domain names hosted across 97 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.201.60.150	koubax.cz	34
81.201.62.20	zdekup.net	11
81.201.58.168	neyowo.cz	11
81.201.56.243	pakam3.cz	10
81.201.61.25	m2i.cz	9
81.201.63.18	trvanlivejidlo.cz	8
81.201.61.194	dstylmh.cz	7
81.201.60.138	pilsfree.net	6
81.201.58.33	vtrd.in	4
81.201.61.200	gamecraft.cz	4
81.201.59.159	charlieblog.eu	4
81.201.59.63	pocitace-plzen.cz	4
81.201.56.53	banknotes.cz	3
81.201.59.87	ctvrtepatro.cz	3
81.201.57.164	projekty-bim.cz	3
81.201.63.13	profiadministrativa.cz	3
81.201.56.75	kreuz.cz	3
81.201.61.26	mhbox.cz	3
81.201.59.129	petruny.com	2
81.201.61.3	uklizejsradosti.cz	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

1,070 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
81.201.60.14	AS8251 FreeTel, s.r.o.	`0.65ms` from Prague, CZ
81.201.61.39	AS8251 FreeTel, s.r.o.	`2.38ms` from Prague, CZ
81.201.56.15	AS8251 FreeTel, s.r.o.	`2.28ms` from Prague, CZ
81.201.59.49	AS8251 FreeTel, s.r.o.	`2.30ms` from Prague, CZ
81.201.62.30	AS8251 FreeTel, s.r.o.	`4.60ms` from Prague, CZ
81.201.63.30	AS8251 FreeTel, s.r.o.	`3.28ms` from Prague, CZ
81.201.57.58	AS8251 FreeTel, s.r.o.	`2.27ms` from Prague, CZ
81.201.58.0	AS8251 FreeTel, s.r.o.	`2.27ms` 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
145.24.9.101	AS1103 SURF B.V.	`2.42ms` from Amsterdam, NL
172.214.22.101	AS8075 Microsoft Corporation	`0.37ms` from Ashburn, US
101.200.138.245	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.98ms` from Beijing, CN
112.125.200.197	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.65ms` from Beijing, CN
178.254.160.37	AS28964 Orion Telekom Tim d.o.o.Beograd	`2.25ms` from Belgrade, RS
88.228.95.53	AS9121 Turk Telekomunikasyon Anonim Sirketi	`4.60ms` from Bursa, TR
110.6.213.85	AS4837 CHINA UNICOM China169 Backbone	`11.06ms` from Changchun, CN
204.106.244.245	AS47038 DMCI Broadband, LLC.	`12.21ms` from Chicago, US
35.223.212.229	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
217.231.144.37	AS3320 Deutsche Telekom AG	`3.78ms` from Duesseldorf, DE
185.227.156.21	AS209846 SWP Stadtwerke Pforzheim GmbH & Co. KG	`3.28ms` from Frankfurt am Main, DE
92.219.59.229	AS3209 Vodafone GmbH	`6.68ms` from Frankfurt am Main, DE
59.149.238.53	AS9269 Hong Kong Broadband Network Ltd.	`0.80ms` from Hong Kong, HK
167.98.54.165	AS25180 Exponential-E Ltd.	`0.48ms` from London, GB
92.236.43.213	AS5089 Virgin Media Limited	`5.09ms` from London, GB
148.135.63.133	AS35916 MULTACOM CORPORATION	`0.14ms` from Los Angeles, US
213.147.3.21	AS12431 SYBCOM GmbH	`1.69ms` from Luxembourg, LU
187.52.55.245	AS8167 V tal	`1.10ms` from Novo Hamburgo, BR
45.166.148.5	AS267963 HAYAN TELECOM	`7.78ms` from Rio de Janeiro, BR
200.152.27.5	AS28590 Directnet Prestacao de Servicos Ltda.	`12.66ms` from Sao Paulo, BR
201.31.193.149	AS4230 CLARO S.A.	`0.85ms` from Sao Paulo, BR
119.70.99.21	AS17858 LG POWERCOMM	`1.61ms` from Seoul, KR
52.76.100.21	AS16509 Amazon.com, Inc.	`0.10ms` from Singapore, SG
190.4.189.21	AS11081 United Telecommunication Services (UTS)	`1.12ms` from Willemstad, CW
102.41.72.149	AS8452 TE-AS	`2.88ms` from Cairo, EG

Traceroute

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

traceroute -a -n -q1 -f2 81.201.61.36

traceroute to 81.201.61.36 (81.201.61.36): 64 hops max, 52 byte packets

2 [] 91.210.16.74 0.293 ms

3 [AS8251] 81.201.61.36 2.485 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On December 6th 2025

What are IP address ranges?

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