1. All IP Ranges
  2. 212.0.0.0/8
  3. 212.87.0.0/16
  4. AS15373  | 212.87.251.0/24

212.87.251.0/24

AS15373  ·  Politechnika Czestochowska

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Summary

Country Poland
Domain pcz.pl
ASN AS15373
Registry RIPE
ID UJD-EDUROAM-PL-251

WHOIS Details

inetnum:        212.87.251.0 - 212.87.251.255
netname:        UJD-EDUROAM-PL-251
country:        PL
admin-c:        MW7977-RIPE
tech-c:         AO4511-RIPE
status:         ASSIGNED PA
mnt-by:         PL-CZESTMAN-MNT
created:        2025-05-09T11:17:41Z
last-modified:  2025-05-09T11:17:41Z
source:         RIPE
remarks:        =================================================================================================
remarks:        In case of abuse (hacking, spam sending, intrusion, other unaccepted activities) please use e-mail: abuse@ujd.edu.pl
remarks:        =================================================================================================
abuse-email:    abuse@man.pcz.pl
abuse-c:        CZ512-RIPE
abuse-org:      ORG-PC2-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:          212.87.251.0/24
origin:         AS15373
mnt-by:         PL-CZESTMAN-MNT
created:        2025-05-09T11:20:26Z
last-modified:  2025-05-09T11:20:26Z
source:         RIPE
remarks:        Educational
remarks:        The networks of educational, scientific, governmental, health, cultural, religious, research subjects Metropolitan Area Network CzestMAN, Czestochowa, POLAND

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
212.87.96.0/19 AS47377 Orange Belgium SA 8,192
212.87.128.0/19 AS20677 imos Gesellschaft fuer Internet-Marketing und Online-Services mbH 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
212.87.214.0/23 AS44486 Mo's Operations GmbH 512
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
212.87.254.0/23 AS206241 STOWARZYSZENIE DO SPRAW ROZWOJU SPOLECZENSTWA INFORMACYJNEGO SUBREGIONU POLNOCNEGO WOJEWODZTWA SLASKIEGO 512
212.87.212.0/23 AS213250 DeinServerHost 512
212.87.170.0/23 AS206621 Brylenko Oleksandra 512
212.87.180.0/23 AS206621 Brylenko Oleksandra 512
212.87.192.0/23 AS38136 Akari Networks (Tokyo) 512
212.87.194.0/23 AS38136 Akari Networks (Tokyo) 512
212.87.210.0/23 AS209689 Nexi Germany GmbH 512
212.87.208.0/23 AS209689 Nexi Germany GmbH 512
212.87.197.0/24 AS49981 UGN BILISIM INTERNET HIZMETLERI LTD 256
212.87.206.0/24 AS50837 Al-Kam Telecommunication and Information Technology Co. LLC. 256
212.87.203.0/24 AS54252 Private Customer 256
212.87.200.0/24 AS5511 Telecom 256
212.87.202.0/24 AS5511 Internet Utilities Europe and Asia Limited 256
212.87.201.0/24 AS9304 Beijing Tehuadun Starkley Trading Co. Ltd 256
212.87.253.0/24 AS15373 The Eduroam Network of Uniwersytet Jana Dlugosza w Czestochowie 256
212.87.217.0/24 AS197537 SKYQUANTUM TELECOM LTD. 256
212.87.169.0/24 AS202538 Brylenko Oleksandra 256
212.87.252.0/24 AS202667 Klasztor OO Paulinow Jasna Gora 256
212.87.196.0/24 AS209192 Sarnet Telekomünikasyon Hizmetleri - Denizli, Türkiye 256
212.87.205.0/24 AS211439 Neterra 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
212.87.198.0/24 AS44620 Netlen Internet Hizmetleri Ltd. Sti. 256
212.87.199.0/24 AS44620 Netlen Internet Hizmetleri Ltd. Sti. 256

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
212.87.251.121 wmtstanislawswiacik.pl 1
212.87.251.101 lamorski.eu 1

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

IP Address ASN Details
212.87.251.1 AS15373 Politechnika Czestochowska 6.06ms 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
181.23.87.8 AS22927 Telefonica de Argentina 3.43ms from Buenos Aires, AR
191.15.134.104 AS26599 TELEFÔNICA BRASIL S.A 17.08ms from Curitiba, BR
108.194.48.104 AS7018 AT&T Enterprises, LLC 6.01ms from Dallas, US
106.195.122.56 AS45609 Bharti Airtel Ltd. AS for GPRS Service 5.84ms from Delhi, IN
18.162.35.24 AS16509 Amazon.com, Inc. 0.14ms from Hong Kong, HK
122.99.223.200 AS17878 DREAMMARK1 4.04ms from Incheon, KR
82.37.35.200 AS5089 Virgin Media Limited 5.66ms from London, GB
90.211.188.40 AS5607 Sky UK Limited 8.04ms from London, GB
199.241.99.200 AS27589 MOJOHOST 0.12ms from Miami, US
69.114.221.120 AS6128 Cablevision Systems Corp. 7.52ms from New York City, US
20.171.213.200 AS8075 Microsoft Corporation 0.17ms from Phoenix, US
78.3.24.104 AS5391 Hrvatski Telekom d.d. 1.86ms from Zagreb, HR
85.72.92.200 AS6799 Ote SA (Hellenic Telecommunications Organisation) 1.43ms from Athens, GR
71.147.37.104 AS7018 AT&T Enterprises, LLC 11.47ms from Atlanta, US
125.167.153.24 AS7713 PT Telekomunikasi Indonesia 12.51ms from Batam, ID
24.149.68.248 AS4922 Shenandoah Cable Television LLC 8.77ms from Berkeley Springs, US
69.246.101.88 AS7922 Comcast Cable Communications, LLC 14.79ms from Dallas, US
66.74.38.56 AS20001 Charter Communications Inc 9.87ms from Los Angeles, US
80.203.57.24 AS29695 Altibox AS 2.52ms from Oslo, NO
89.2.9.104 AS15557 Societe Francaise Du Radiotelephone - SFR SA 6.49ms from Paris, FR
187.46.84.152 AS26615 TIM S/A 1.34ms from Rio de Janeiro, BR
46.149.34.200 AS51973 Koltushsky Internet Ltd 0.92ms from Saint Petersburg, RU
121.184.132.152 AS4766 Korea Telecom 3.28ms from Seoul, KR
42.87.121.24 AS4837 CHINA UNICOM China169 Backbone 11.94ms from Tieling, CN
2.50.173.184 AS5384 Emirates Internet 4.31ms from Al Fujairah City, AE

Traceroute

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

$
traceroute -a -n -q1 -f2 212.87.251.1
traceroute to 212.87.251.1 (212.87.251.1): 64 hops max, 52 byte packets
2 [] 195.182.218.111 0.498 ms
6 *
7 [AS15373] 212.87.251.1 6.119 ms
Measurement taken from IPinfo ProbeNet in Warsaw, PL
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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