212.87.238.0/23

AS15373 · Politechnika Czestochowska

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Summary

Country	Poland
Domain	ujd.edu.pl
ASN	AS15373
Registry	RIPE
ID	UJD-EDUROAM-239-PL

WHOIS Details

inetnum:        212.87.239.0 - 212.87.239.255
netname:        UJD-EDUROAM-239-PL
descr:          The Eduroam Network of Uniwersytet Jana Dlugosza w Czestochowie
country:        PL
org:            ORG-AJD1-RIPE
admin-c:        MW7977-RIPE
tech-c:         AO4511-RIPE
status:         ASSIGNED PA
remarks:        =================================================================================================
remarks:        In case of abuse (hacking, spam sending, intrusion, other unaccepted activities) please use e-mail: abuse@ujd.edu.pl
remarks:        =================================================================================================
mnt-by:         PL-CZESTMAN-MNT
mnt-lower:      PL-CZESTMAN-MNT
mnt-routes:     PL-CZESTMAN-MNT
created:        2015-07-02T13:59:24Z
last-modified:  2023-10-27T11:56:18Z
source:         RIPE
abuse-email:    abuse@ujd.edu.pl
abuse-c:        AO4511-RIPE
abuse-org:      ORG-AJD1-RIPE

organisation:   ORG-AJD1-RIPE
org-name:       Uniwersytet Jana Dlugosza w Czestochowie
org-type:       OTHER
address:        ul. Waszyngtona 4/8, 42-200 Czestochowa, Poland
e-mail:         admin@ajd.czest.pl
abuse-c:        AO4511-RIPE
mnt-ref:        PL-CZESTMAN-MNT
mnt-by:         PL-CZESTMAN-MNT
created:        2015-07-02T13:45:03Z
last-modified:  2023-10-27T11:37:00Z
source:         RIPE

role:           AJD-PL Operations
address:        Uniwersytet Jana Dlugosza w Czestochowie
address:        ul. Waszyngtona 4/8, 42-200 Czestochowa, PL
e-mail:         admin@ujd.edu.pl
abuse-mailbox:  abuse@ujd.edu.pl
admin-c:        MW7977-RIPE
tech-c:         MK8828-RIPE
nic-hdl:        AO4511-RIPE
mnt-by:         PL-CZESTMAN-MNT
created:        2015-07-02T13:10:42Z
last-modified:  2023-10-27T11:58:51Z
source:         RIPE

person:         Michal Wojciechowski
address:        Uniwersytet Jana Dlugosza w Czestochoweie
address:        ul. Waszyngtona 4/8, 42-200 Czestochowa
address:        Poland
e-mail:         m.wojciechowski@ujd.edu.pl
phone:          +48 034 3784185
nic-hdl:        MW7977-RIPE
mnt-by:         PL-CZESTMAN-MNT
created:        2015-07-02T10:44:51Z
last-modified:  2023-10-27T11:57:46Z
source:         RIPE

route:          212.87.238.0/23
descr:          The networks of educational, scientific, governmental
descr:          health, cultural, religious, research subjects
descr:          Metropolitan Area Network CzestMAN, Czestochowa,POLAND
origin:         AS15373
remarks:        educational
mnt-routes:     PL-CZESTMAN-MNT
mnt-by:         PL-CZESTMAN-MNT
created:        2006-03-02T15:56:54Z
last-modified:  2006-03-02T15:56:54Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 212.87.0.0/16

Range	ASN	Company	Num of IPs
212.87.32.0/19	AS12512	CBXNET combox internet GmbH	8,192
212.87.128.0/19	AS20677	imos Gesellschaft fuer Internet-Marketing und Online-Services mbH	8,192
212.87.96.0/19	AS47377	Orange Belgium SA	8,192
212.87.64.0/19	AS8607	Digital Space Group Limited	8,192
212.87.224.0/21	AS15373	The network of Czestochowa University of Technology	2,048
212.87.242.0/23	AS209860	The network of MyNET Michal Bronczkowski	512
212.87.248.0/23	AS209860	The network of MyNET Michal Bronczkowski	512
212.87.172.0/23	AS206621	Brylenko Oleksandra	512
212.87.214.0/23	AS44486	Mo's Operations GmbH	512
212.87.212.0/23	AS213250	DeinServerHost	512
212.87.180.0/23	AS206621	Brylenko Oleksandra	512
212.87.254.0/23	AS206241	STOWARZYSZENIE DO SPRAW ROZWOJU SPOLECZENSTWA INFORMACYJNEGO SUBREGIONU POLNOCNEGO WOJEWODZTWA SLASKIEGO	512
212.87.170.0/23	AS206621	Brylenko Oleksandra	512
212.87.208.0/23	AS209689	Nexi Germany GmbH	512
212.87.210.0/23	AS209689	Nexi Germany GmbH	512
212.87.194.0/23	AS38136	Akari Networks (Tokyo)	512
212.87.192.0/23	AS38136	Akari Networks (Tokyo)	512
212.87.201.0/24	AS42831	Private Customer	256
212.87.198.0/24	AS44620	Netlen Internet Hizmetleri Ltd. Sti.	256
212.87.199.0/24	AS44620	Netlen Internet Hizmetleri Ltd. Sti.	256
212.87.203.0/24	AS834	Internet Utilities Europe and Asia Limited	256
212.87.206.0/24	AS50837	Al-Kam Telecommunication and Information Technology Co. LLC.	256
212.87.200.0/24	AS5511	Telecom	256
212.87.251.0/24	AS15373	Politechnika Czestochowska	256
212.87.217.0/24	AS197537	SKYQUANTUM TELECOM LTD.	256
212.87.253.0/24	AS15373	The Eduroam Network of Uniwersytet Jana Dlugosza w Czestochowie	256
212.87.169.0/24	AS202538	Brylenko Oleksandra	256
212.87.252.0/24	AS202667	Klasztor OO Paulinow Jasna Gora	256
212.87.202.0/24	AS5511	Internet Utilities Europe and Asia Limited	256
212.87.196.0/24	AS209192	Sarnet Telekomünikasyon Hizmetleri - Denizli, Türkiye	256
212.87.205.0/24	AS211439	Neterra Ltd.	256
212.87.197.0/24	AS214941	UGN BILISIM INTERNET HIZMETLERI LTD	256
212.87.222.0/24	AS215540	GLOBAL CONNECTIVITY SOLUTIONS LLP	256
212.87.216.0/24	AS26548	FINE GROUP SERVERS SOLUTIONS LLC	256
212.87.218.0/24	AS26548	FINE GROUP SERVERS SOLUTIONS LLC	256
212.87.219.0/24	AS26548	FINE GROUP SERVERS SOLUTIONS LLC	256
212.87.220.0/24	AS41745	Baykov Ilya Sergeevich	256
212.87.223.0/24	AS41745	Baykov Ilya Sergeevich	256

Hosted domains

There are 7 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
212.87.238.51	womczest.eu	2
212.87.238.20	tzn.czest.pl	2
212.87.238.34	traugutt.net	2
212.87.238.154	welllu.pl	1

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
212.87.238.61	AS15373 Politechnika Czestochowska	`5.68ms` from Warsaw, PL
212.87.239.1	AS15373 Politechnika Czestochowska	`5.80ms` from Warsaw, PL

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
75.32.211.7	AS7018 AT&T Enterprises, LLC	`2.82ms` from Dallas, US
203.189.200.23	AS58519 Cloud Computing Corporation	`0.28ms` from Guiyang, CN
136.185.222.7	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.88ms` from Hyderabad, IN
31.49.224.71	AS2856 British Telecommunications PLC	`4.10ms` from London, GB
90.214.71.55	AS5607 Sky UK Limited	`3.77ms` from London, GB
125.8.62.215	AS9824 JCOM Co., Ltd.	`10.16ms` from Osaka, JP
13.38.188.71	AS16509 Amazon.com, Inc.	`0.17ms` from Paris, FR
124.248.174.119	AS23673 Cogetel Online, Cambodia, ISP	`1.31ms` from Phnom Penh, KH
45.27.31.247	AS7018 AT&T Enterprises, LLC	`3.20ms` from San Jose, US
27.239.251.183	AS4766 Korea Telecom	`8.89ms` from Seoul, KR
218.51.105.71	AS9318 SK Broadband Co Ltd	`6.81ms` from Seoul, KR
180.157.134.39	AS4812 China Telecom (Group)	`5.80ms` from Shanghai, CN
111.80.189.135	AS17421 Mobile Business Group	`7.60ms` from Taipei, TW
60.112.231.247	AS17676 SoftBank Corp.	`2.47ms` from Tokyo, JP
77.163.134.71	AS1136 KPN B.V.	`0.94ms` from Amsterdam, NL
34.42.252.7	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
39.118.108.55	AS9318 SK Broadband Co Ltd	`1.82ms` from Incheon, KR
41.193.70.151	AS11845 Vox Telecom Ltd	`0.76ms` from Johannesburg, ZA
115.69.2.39	AS18390 Spintel Pty Ltd	`2.02ms` from Melbourne, AU
71.195.41.23	AS7922 Comcast Cable Communications, LLC	`3.54ms` from Minneapolis, US
109.228.131.87	AS8473 Bahnhof AB	`0.84ms` from Stockholm, SE
20.228.140.7	AS8075 Microsoft Corporation	`0.46ms` from Ashburn, US
212.200.99.39	AS8400 TELEKOM SRBIJA a.d.	`0.61ms` from Belgrade, RS
45.17.248.55	AS7018 AT&T Enterprises, LLC	`4.23ms` from Dallas, US
176.34.172.103	AS16509 Amazon.com, Inc.	`0.20ms` from Dublin, IE

Traceroute

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

traceroute -a -n -q1 -f2 212.87.239.1

traceroute to 212.87.239.1 (212.87.239.1): 64 hops max, 52 byte packets

2 [] 195.182.218.111 0.351 ms

3 [AS196844] 212.191.238.132 4.91 ms

4 [AS196844] 212.191.238.133 5.931 ms

5 [AS15373] 212.87.225.105 5.782 ms

6 *

7 [AS15373] 212.87.239.1 5.987 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On March 20th 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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