212.51.192.0/21

AS8256 · Lodz University of Technology

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Summary

Country	Poland
Domain	lodz.pl
ASN	AS8256
Registry	RIPE
ID	UMED-LODZ-NET

WHOIS Details

inetnum:        212.51.198.0 - 212.51.199.255
netname:        UMED-LODZ-NET
org:            ORG-UMLO1-RIPE
descr:          Medical University of Lodz
descr:          Lodz, Poland
country:        PL
remarks:        -----------------------------------
remarks:        -----------------------------------
remarks:        Any ABUSE notifications please send
remarks:        to ADMIN-C and TECH-C contacts:
admin-c:        MS56056-RIPE
tech-c:         RR14140-RIPE
tech-c:         SM40551-RIPE
remarks:        -----------------------------------
remarks:        -----------------------------------
status:         ASSIGNED PA
mnt-by:         AS8256-MNT
created:        2007-06-29T07:07:51Z
last-modified:  2024-04-15T09:44:43Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        UMLO1-RIPE
abuse-org:      ORG-UMLO1-RIPE

organisation:   ORG-UMLO1-RIPE
org-name:       Medical University of Lodz
org-type:       OTHER
address:        Medical University of Lodz
e-mail:         [email protected]
abuse-c:        UMLO1-RIPE
mnt-by:         AS8256-MNT
mnt-ref:        AS8256-MNT
created:        2013-04-04T12:33:32Z
last-modified:  2024-04-15T09:46:37Z
source:         RIPE

person:         Mariusz Sawko
address:        Medical University of Lodz
address:        IT and Telecommunications Center
address:        Kosciuszki 4
address:        PL 90-647 Lodz, POLAND
phone:          +48 785 911 537
e-mail:         [email protected]
created:        2023-09-20T07:02:02Z
last-modified:  2023-09-20T07:02:02Z
source:         RIPE
nic-hdl:        MS56056-RIPE
mnt-by:         AS8256-MNT

person:         Radoslaw Ryzlak
address:        Medical University of Lodz
address:        IT and Telecommunications Center
address:        Kosciuszki 4
address:        PL 90-647 Lodz, POLAND
phone:          +48 42 272 50 03
e-mail:         [email protected]
created:        2023-09-20T07:03:01Z
last-modified:  2023-09-20T07:03:01Z
source:         RIPE
nic-hdl:        RR14140-RIPE
mnt-by:         AS8256-MNT

person:         Szymon Malinowski
address:        Medical University of Lodz
address:        IT and Telecommunications Center
address:        Kosciuszki 4
address:        90-647 Lodz, POLAND
phone:          +48 693 001 421
e-mail:         [email protected]
created:        2024-04-15T09:40:38Z
last-modified:  2024-04-15T09:40:38Z
source:         RIPE
nic-hdl:        SM40551-RIPE
mnt-by:         AS8256-MNT

route:          212.51.192.0/21
descr:          LODMAN
origin:         AS8256
mnt-by:         AS8256-MNT
created:        2003-12-11T19:59:23Z
last-modified:  2003-12-11T19:59:23Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 212.51.0.0/16

Range	ASN	Company	Num of IPs
212.51.64.0/18	AS5483	Magyar Telekom Plc.	16,384
212.51.128.0/19	AS13030	Init7 (Switzerland) Ltd.	8,192
212.51.160.0/19	AS16347	ADISTA SAS	8,192
212.51.32.0/19	AS12334	R Cable y Telecable Telecomunicaciones, S.A.U.	8,192
212.51.0.0/19	AS25415	ADDIX GmbH	8,192
212.51.224.0/19	AS12762	Vorarlberger Informatik- und Telekommunikationsdienstleistungsgesellschaft mbH	8,192
212.51.204.0/24	AS8256	Center of Molecular and Macromolecular Studies, Polish Academy of Sciences	256
212.51.110.0/24	AS5483	Magyar Telekom mobile services	256
212.51.79.0/24	AS5483	Magyar Telekom	256
212.51.91.0/24	AS5483	T-email virtual servers	256

Hosted domains

There are 19 domain names hosted across 8 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
212.51.192.12	zamiennikiapu.pl	11
212.51.197.55	holosan.at	2
212.51.193.28	twinalt.eu	1
212.51.192.23	anon.cx	1
212.51.193.73	dozymetria.com	1
212.51.193.78	npz.net.pl	1
212.51.193.69	repropl.com	1
212.51.193.77	programyzdrowotne.pl	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

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Pingable IPs

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

IP Address	ASN	Details
212.51.198.222	AS8256 Lodz University of Technology	`5.88ms` from Warsaw, PL
212.51.193.73	AS8256 Lodz University of Technology	`5.94ms` from Warsaw, PL
212.51.196.35	AS8256 Lodz University of Technology	`5.63ms` from Warsaw, PL
212.51.192.66	AS8256 Lodz University of Technology	`3.29ms` from Warsaw, PL
212.51.199.193	AS8256 Lodz University of Technology	`5.75ms` 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
103.165.18.5	AS142022 CRYSTAL WATERS FIBRE PTY LTD	`3.77ms` from Brisbane, AU
102.46.197.181	AS8452 TE-AS	`7.61ms` from Cairo, EG
136.116.225.149	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
212.143.116.165	AS1680 Cellcom Fixed Line Communication L.P	`0.75ms` from Haifa, IL
113.176.6.21	AS45899 VNPT Corp	`1.01ms` from Hanoi, VN
49.84.88.165	AS4134 CHINANET-BACKBONE	`5.31ms` from Huai'an, CN
129.15.67.245	AS25776 University of Oklahoma	`7.91ms` from Kansas City, US
38.242.224.37	AS51167 Contabo GmbH	`0.17ms` from Lauterbourg, FR
64.60.184.213	AS14265 TPx Communications	`0.67ms` from Los Angeles, US
213.56.172.245	AS3215 Orange S.A.	`2.72ms` from Lyon, FR
222.127.219.213	AS132199 Globe Telecom Inc.	`2.18ms` from Manila, PH
148.204.93.181	AS3484 Instituto Politecnico Nacional	`4.05ms` from Mexico City, MX
213.33.162.133	AS3216 PJSC "Vimpelcom"	`0.60ms` from Moscow, RU
87.151.107.181	AS3320 Deutsche Telekom AG	`7.32ms` from Nuernberg, DE
54.89.152.21	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
204.15.63.69	AS4181 TDS TELECOM	`11.26ms` from Seattle, US
182.161.143.85	AS45361 Ulsan Jung-Ang Broadcasting Network	`7.58ms` from Seoul, KR
119.209.178.5	AS4766 Korea Telecom	`2.13ms` from Seoul, KR
119.222.92.53	AS4766 Korea Telecom	`4.89ms` from Seoul, KR
138.91.45.197	AS8075 Microsoft Corporation	`0.67ms` from Singapore, SG
220.129.193.229	AS3462 Data Communication Business Group	`1.09ms` from Taipei, TW
60.149.169.213	AS17676 SoftBank Corp.	`2.86ms` from Tokyo, JP
45.156.128.197	AS211680 NSEC - Sistemas Informaticos, S.A.	`0.56ms` from Amsterdam, NL
72.195.164.245	AS22773 Cox Communications Inc.	`1.85ms` from Atlanta, US
188.26.120.37	AS8708 DIGI ROMANIA S.A.	`4.59ms` from Bucharest, RO

Traceroute

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

traceroute -a -n -q1 212.51.193.1

traceroute to 212.51.193.1 (212.51.193.1): 64 hops max, 52 byte packets

1 [AS15169] 74.125.252.117 0.633 ms

2 [AS15169] 192.178.96.240 0.382 ms

3 *

4 [AS5617] 213.25.5.130 16.705 ms

5 *

6 [AS8256] 212.51.193.1 14.85 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On December 14th 2025

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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