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:    abuse@pilsfree.net
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:         info@pilsfree.net
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:         ripe@muki.cz
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 220 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	svatba.fun	34
81.201.62.20	zdekup.net	11
81.201.58.168	chroniclesofancestors.com	11
81.201.56.243	wlezley.eu	10
81.201.61.25	dittrichovi.cz	9
81.201.63.18	promakaravan.cz	8
81.201.61.194	dstylmh.cz	7
81.201.60.138	pilsfree.net	6
81.201.61.200	gcmc.cz	4
81.201.59.159	rpiblog.cz	4
81.201.58.33	vtrd.in	4
81.201.59.63	bicbozi.cz	4
81.201.56.53	banknotes.cz	3
81.201.63.17	starlaces.cz	3
81.201.59.87	jankus.cz	3
81.201.56.75	kreuz.cz	3
81.201.57.164	projekty-bim.cz	3
81.201.61.26	mschranka.cz	3
81.201.63.13	profinetworks.cz	3
81.201.61.3	melwen.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

1,075 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
81.201.58.0	AS8251 FreeTel, s.r.o.	`2.24ms` from Prague, CZ
81.201.61.39	AS8251 FreeTel, s.r.o.	`2.41ms` from Prague, CZ
81.201.60.14	AS8251 FreeTel, s.r.o.	`0.70ms` from Prague, CZ
81.201.57.176	AS8251 FreeTel, s.r.o.	`2.28ms` from Prague, CZ
81.201.62.30	AS8251 FreeTel, s.r.o.	`4.59ms` from Prague, CZ
81.201.59.228	AS8251 FreeTel, s.r.o.	`2.35ms` from Prague, CZ
81.201.63.30	AS8251 FreeTel, s.r.o.	`3.25ms` from Prague, CZ
81.201.56.226	AS8251 FreeTel, s.r.o.	`2.28ms` 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
216.65.129.69	AS7029 Windstream Communications LLC	`0.94ms` from Ashburn, US
52.34.148.245	AS16509 Amazon.com, Inc.	`0.12ms` from Boardman, US
161.35.218.245	AS14061 DigitalOcean, LLC	`0.26ms` from Frankfurt am Main, DE
92.5.39.53	AS31898 Oracle Corporation	`0.32ms` from Frankfurt am Main, DE
37.85.15.197	AS3320 Deutsche Telekom AG	`15.45ms` from Frankfurt am Main, DE
128.112.187.37	AS88 Princeton University	`2.80ms` from New York City, US
86.234.217.37	AS3215 Orange S.A.	`17.48ms` from Paris, FR
20.3.41.165	AS8075 Microsoft Corporation	`0.27ms` from Quincy, US
209.82.115.53	AS6461 Zayo Bandwidth	`3.58ms` from Seattle, US
32.216.97.69	AS46690 Southern New England Telephone Company and SNET America, Inc.	`9.75ms` from Secaucus, US
202.43.62.37	AS3786 LG DACOM Corporation	`0.89ms` from Seoul, KR
118.223.178.5	AS9318 SK Broadband Co Ltd	`1.73ms` from Seoul, KR
40.132.8.149	AS7029 Windstream Communications LLC	`1.84ms` from Atlanta, US
181.57.234.37	AS14080 Telmex Colombia S.A.	`0.95ms` from Bogota, CO
82.79.9.229	AS8708 DIGI ROMANIA S.A.	`4.66ms` from Bucharest, RO
108.177.9.85	AS15169 Google LLC	`6.15ms` from Dallas, US
92.131.126.245	AS3215 Orange S.A.	`5.32ms` from Frankfurt am Main, DE
138.99.30.37	AS61786 E. D. SERVIÇOS DE COMUNICAÇÕES LTDA	`14.04ms` from Joao Pessoa, BR
108.29.162.245	AS701 Verizon Business	`2.48ms` from New York City, US
191.6.0.117	AS263545 BETINI NET TELECOM LTDA	`7.74ms` from Rio de Janeiro, BR
45.144.76.229	AS210150 Voss Fiber AS	`7.78ms` from Sandefjord, NO
122.41.211.245	AS17858 LG POWERCOMM	`1.46ms` from Seoul, KR
119.31.161.53	AS17307 NTT Global Networks Incorporated	`0.38ms` from Singapore, SG
125.199.226.69	AS2518 BIGLOBE Inc.	`5.06ms` from Tokyo, JP
130.174.40.5	AS3360 DXC US Latin America Corporation	`1.00ms` from Warsaw, PL

Traceroute

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

traceroute -a -n -q1 -f2 81.201.61.43

traceroute to 81.201.61.43 (81.201.61.43): 64 hops max, 52 byte packets

2 [] 91.210.16.74 0.343 ms

3 [AS8251] 81.201.61.43 2.477 ms

Measurement taken from

IPinfo ProbeNet in Prague, CZ

On December 28th 2025

What are IP address ranges?

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