1. All IP Ranges
  2. 193.0.0.0/8
  3. 193.239.0.0/16
  4. AS35096  | 193.239.0.0/23

193.239.0.0/23

AS35096  ·  Alef Nula a.s.

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Summary

Country Czechia
Domain alef.com
ASN AS35096
Parent Range 193.239.0.0/22
Registry RIPE
ID CZ-ALEF

WHOIS Details

inetnum:        193.239.0.0 - 193.239.3.255
netname:        CZ-ALEF
country:        CZ
org:            ORG-ANa3-RIPE
admin-c:        PV1961-RIPE
admin-c:        DN797-RIPE
tech-c:         DN797-RIPE
status:         ASSIGNED PI
notify:         petr.vacha@alef.com
notify:         dalibor.naus@alef.com
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ALEFCZ-MNT
mnt-routes:     ALEFCZ-MNT
mnt-domains:    ALEFCZ-MNT
created:        2005-05-27T09:46:58Z
last-modified:  2025-05-13T13:50:58Z
source:         RIPE
sponsoring-org: ORG-Ra2-RIPE
abuse-email:    petr.vacha@alef.com
abuse-c:        AR30127-RIPE
abuse-org:      ORG-Ra2-RIPE

organisation:   ORG-ANa3-RIPE
org-name:       Alef Nula a.s.
country:        CZ
org-type:       OTHER
address:        Pernerova 691/42
address:        Prague 8
address:        186 00
address:        Czech Republic
phone:          +420 225090111
e-mail:         martin.bisko@alef.com
abuse-c:        AR30127-RIPE
e-mail:         petr.vacha@alef.com
admin-c:        PV1961-RIPE
tech-c:         PV1961-RIPE
admin-c:        MB41014-RIPE
tech-c:         MB41014-RIPE
mnt-ref:        ALEFCZ-MNT
mnt-by:         ALEFCZ-MNT
created:        2005-05-23T14:13:09Z
last-modified:  2022-12-01T16:15:39Z
source:         RIPE
abuse-email:    petr.vacha@alef.com
abuse-c:        AR30127-RIPE
abuse-org:      undefined

person:         Dalibor Naus
address:        ALEF NULA a.s.
address:        Pernerova 691/42
address:        Prague 8
address:        186 00
address:        Czech Republic
phone:          +420 2 250 090 111
fax-no:         +420 2 250 090 112
e-mail:         dalibor.naus@alef.com
nic-hdl:        DN797-RIPE
mnt-by:         ALEFCZ-MNT
created:        2005-05-23T14:04:00Z
last-modified:  2025-05-14T10:46:32Z
source:         RIPE

person:         Petr Vacha
address:        ALEF NULA a.s.
address:        Pernerova 691/42
address:        Prague 8
address:        186 00
address:        Czech Republic
phone:          +420 2 250 090 111
fax-no:         +420 2 250 090 112
e-mail:         petr.vacha@alef.com
nic-hdl:        PV1961-RIPE
mnt-by:         ALEFCZ-MNT
created:        2005-05-23T14:04:00Z
last-modified:  2025-05-14T10:47:06Z
source:         RIPE

route:          193.239.0.0/22
descr:          ALEFNULA
origin:         AS35096
mnt-by:         ALEFCZ-MNT
created:        2005-06-02T13:35:34Z
last-modified:  2005-06-02T13:35:34Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 193.239.0.0/23

Range ASN Company Num of IPs
193.239.0.0/22 AS35096 Alef Nula a.s. 1,024

Nearby Ranges

BGP prefixes that overlap with 193.239.0.0/16

Range ASN Company Num of IPs
193.239.80.0/22 AS35215 MERITA Maria Zabrocka 1,024
193.239.56.0/22 AS35179 Korbank S. A. 1,024
193.239.28.0/22 AS35170 InfraLeuna GmbH 1,024
193.239.52.0/22 AS47902 Procne S.R.L. 1,024
193.239.60.0/22 AS15470 AverTech Sp. z o.o. 1,024
193.239.0.0/22 AS35096 Alef Nula a.s. 1,024
193.239.20.0/22 AS3303 Steven Glogger 1,024
193.239.88.0/22 AS31673 Denit B.V. 1,024
193.239.36.0/22 AS47273 Krzysztof Andrzej Kozak trading as P.P.H.U. ARTUS 1,024
193.239.104.0/22 AS25394 deltaweb, Inh. Markus Diehl e.K. 1,024
193.239.100.0/22 AS12741 SolarMe Tomasz Kaszynski 1,024
193.239.68.0/22 AS39468 LLC Caprate Partners 1,024
193.239.40.0/22 AS35609 Gerhard Marek trading as Smart Force e.U. 1,024
193.239.44.0/22 AS60713 Domena.pl sp. z o.o. 1,024
193.239.96.0/22 AS48854 team.blue Denmark A/S 1,024
193.239.124.0/22 AS35306 P.P.H. Rene 1,024
193.239.76.0/22 AS201080 SCANI 1,024
193.239.32.0/22 AS202466 QBE Management Services (UK) Limited 1,024
193.239.72.0/22 AS35297 Dataline LLC 1,024
193.239.92.0/22 AS35224 PLINQ BV 1,024
193.239.128.0/23 AS15895 Kyivstar PJSC 512
193.239.198.0/23 AS12811 rue du Marechal de lattre de Tassigny 512
193.239.240.0/23 AS12811 rue du Marechal de lattre de Tassigny 512
193.239.150.0/23 AS136038 HDTIDC LIMITED 512
193.239.154.0/23 AS136038 HDTIDC LIMITED 512
193.239.160.0/23 AS200740 Network Management Ltd 512
193.239.166.0/23 AS200740 Network Management Ltd 512
193.239.174.0/23 AS20712 Milliways Investments LTD 512
193.239.168.0/23 AS207355 Ka-net 512
193.239.244.0/23 AS215372 KIProtect GmbH 512
193.239.200.0/23 AS3303 Comed AG 512
193.239.206.0/23 AS33951 FORWEB S.C. Monika Bodetko, Tomasz Pawlowski 512
193.239.130.0/23 AS34358 Cyber_Folks SRL 512
193.239.214.0/23 AS34516 ARX-NET SA 512
193.239.158.0/23 AS34538 QUICK NET SRL 512
193.239.210.0/23 AS34762 Combell NV 512
193.239.152.0/23 AS35144 Dream Line LTD 512
193.239.156.0/23 AS35151 HAVI Logistics IS GmbH 512
193.239.186.0/23 AS35224 PLINQ BV 512
193.239.212.0/23 AS35261 Core Telecom S.R.L. 512
193.239.180.0/23 AS35296 NSC KIPT 512
193.239.222.0/23 AS35316 Promo Internet B.V. 512
193.239.230.0/23 AS35322 CARO NETWORK SRL 512
193.239.234.0/23 AS35325 INCOMPLAST SERVICE LLC 512
193.239.188.0/23 AS35339 AtNOC GmbH 512
193.239.238.0/23 AS35345 CJSC ASNOVA holding 512
193.239.254.0/23 AS35442 TOV Internet on the Podol 512
193.239.216.0/23 AS35523 Load.me sp. z o. o. 512
193.239.136.0/23 AS42194 Makolab S.A. 512
193.239.218.0/23 AS42417 NTT DATA ROMANIA S.A. 512

Hosted domains

There are no domains currently hosted on this ASN.

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Pingable IPs

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

IP Address ASN Details
193.239.1.29 AS35096 Alef Nula a.s. 1.11ms from Prague, CZ
193.239.0.3 AS35096 Alef Nula a.s. 0.50ms 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
99.123.158.55 AS7018 AT&T Enterprises, LLC 2.63ms from Atlanta, US
59.88.128.135 AS9829 National Internet Backbone 12.35ms from Bengaluru, IN
172.68.32.23 AS13335 Cloudflare, Inc. 0.15ms from Denver, US
89.183.236.87 AS13045 htp GmbH 9.07ms from Frankfurt am Main, DE
221.226.116.247 AS4134 CHINANET-BACKBONE 1.07ms from Nanjing, CN
54.165.10.151 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
47.84.162.167 AS45102 Alibaba (US) Technology Co., Ltd. 0.93ms from Singapore, SG
4.197.181.23 AS8075 Microsoft Corporation 0.65ms from Sydney, AU
34.104.174.183 AS396982 Google LLC 0.16ms from Tokyo, JP
102.154.28.71 AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom) 17.89ms from Tunis, TN
66.225.210.199 AS23352 DEFT.COM 0.30ms from Ashburn, US
20.15.33.7 AS8075 Microsoft Corporation 0.20ms from Boydton, US
182.242.49.247 AS134765 CHINANET Yunnan province IDC1 network 1.08ms from Kunming, CN
95.183.67.55 AS21453 Flex Ltd. 2.07ms from Moscow, RU
65.50.156.39 AS14277 GiGstreem 1.36ms from Orlando, US
63.237.192.23 AS209 CenturyLink Communications, LLC 0.88ms from Santa Clara, US
61.204.24.151 AS2516 KDDI CORPORATION 3.06ms from Tokyo, JP
115.163.209.103 AS2527 Sony Network Communications Inc. 5.59ms from Tokyo, JP
72.198.195.215 AS22773 Cox Communications Inc. 9.47ms from Kansas City, US
121.120.188.231 AS9534 Binariang Berhad 16.98ms from Kuala Lumpur, MY
47.142.41.55 AS5650 Frontier Communications of America, Inc. 9.39ms from Los Angeles, US
193.237.4.71 AS5378 Vodafone Limited 5.86ms from Manchester, GB
81.79.132.183 AS5378 Vodafone Limited 6.69ms from Manchester, GB
64.166.58.167 AS7018 AT&T Enterprises, LLC 6.45ms from Redding, US
93.62.83.247 AS12874 Fastweb SpA 0.88ms from Rome, IT

Traceroute

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

$
traceroute -a -n -q1 -f3 193.239.0.3
traceroute to 193.239.0.3 (193.239.0.3): 64 hops max, 52 byte packets
4 [AS35096] 193.239.0.3 0.512 ms
Measurement taken from IPinfo ProbeNet in Prague, CZ
On

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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