91.220.103.0/24

AS8508 · Silesian University of Technology, Computer Centre

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Summary

Country	Poland
Domain	bs.katowice.pl
ASN	AS8508
Registry	RIPE
ID	BIBLIOTEKASLASKA

WHOIS Details

inetnum:        91.220.103.0 - 91.220.103.255
netname:        BibliotekaSlaska
country:        PL
org:            ORG-BS81-RIPE
admin-c:        BS7272-RIPE
tech-c:         BS7272-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         PL-CKPOLSL-MNT
mnt-domains:    PL-CKPOLSL-MNT
mnt-routes:     PL-CKPOLSL-MNT
created:        2010-11-03T10:36:58Z
last-modified:  2016-04-14T11:02:14Z
source:         RIPE
sponsoring-org: ORG-CSUo1-RIPE
abuse-email:    abuse@bs.katowice.pl
abuse-c:        BS7272-RIPE
abuse-org:      ORG-CSUo1-RIPE

organisation:   ORG-BS81-RIPE
org-name:       Biblioteka Slaska
country:        PL
org-type:       OTHER
address:        Biblioteka Slaska
address:        plac Rady Europy 1
address:        40-021 Katowice
address:        Poland
e-mail:         info@bs.katowice.pl
admin-c:        BS7272-RIPE
tech-c:         BS7272-RIPE
abuse-c:        BS7272-RIPE
mnt-ref:        PL-CKPOLSL-MNT
mnt-by:         PL-CKPOLSL-MNT
created:        2010-11-02T11:10:50Z
last-modified:  2022-12-01T16:18:33Z
source:         RIPE

role:           Biblioteka Slaska
address:        Biblioteka Slaska
address:        plac Rady Europy 1
address:        40-021 Katowice
address:        Poland
e-mail:         abuse@bs.katowice.pl
admin-c:        LJ1536-RIPE
admin-c:        RL640-RIPE
tech-c:         LJ1536-RIPE
tech-c:         RL640-RIPE
nic-hdl:        BS7272-RIPE
abuse-mailbox:  abuse@bs.katowice.pl
mnt-by:         PL-CKPOLSL-MNT
created:        2013-12-27T20:05:21Z
last-modified:  2013-12-27T20:05:21Z
source:         RIPE

route:          91.220.103.0/24
descr:          BibliotekaSlaska
origin:         AS8508
mnt-by:         PL-CKPOLSL-MNT
mnt-lower:      PL-CKPOLSL-MNT
mnt-routes:     PL-CKPOLSL-MNT
created:        2010-12-16T09:17:00Z
last-modified:  2010-12-16T09:17:00Z
source:         RIPE

Hosted domains

There are 11 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
91.220.103.13	sbc.org.pl	6
91.220.103.53	ibribs.pl	2
91.220.103.29	bs.katowice.pl	1
91.220.103.14	ariadna.org.pl	1
91.220.103.56	zaranieslaskie.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

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

IP Address	ASN	Details
91.220.103.96	AS8508 Silesian University of Technology, Computer Centre	`5.62ms` 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
111.198.93.56	AS4808 China Unicom Beijing Province Network	`5.45ms` from Beijing, CN
18.201.227.232	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
182.245.161.120	AS4134 CHINANET-BACKBONE	`1.26ms` from Kunming, CN
3.111.175.24	AS16509 Amazon.com, Inc.	`0.13ms` from Mumbai, IN
222.216.129.216	AS4134 CHINANET-BACKBONE	`0.44ms` from Nanning, CN
78.119.153.168	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`7.44ms` from Paris, FR
86.205.99.168	AS3215 Orange S.A.	`12.61ms` from Paris, FR
213.44.1.120	AS5410 Bouygues Telecom SA	`1.55ms` from Paris, FR
44.228.161.40	AS16509 Amazon.com, Inc.	`4.56ms` from Portland, US
168.194.57.104	AS267513 Seanet Telecom Carazinho Eireli	`5.19ms` from Porto Alegre, BR
3.231.158.56	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
186.35.97.200	AS6535 Telmex Servicios Empresariales S.A.	`8.99ms` from Santiago, CL
165.246.33.24	AS9317 INHA UNIVERSITY	`1.45ms` from Seoul, KR
188.92.254.24	AS14593 Space Exploration Technologies Corporation	`14.48ms` from Sofia, BG
109.241.196.72	AS29314 VECTRA S.A.	`13.19ms` from Warsaw, PL
2.191.113.232	AS58224 Iran Telecommunication Company PJS	`17.47ms` from Yerevan, AM
76.119.14.184	AS7922 Comcast Cable Communications, LLC	`7.71ms` from Boston, US
177.3.105.248	AS8167 V tal	`0.76ms` from Curitiba, BR
72.32.55.184	AS33070 Rackspace Hosting	`1.11ms` from Dallas, US
23.3.71.216	AS20940 Akamai International B.V.	`0.13ms` from Delhi, IN
18.200.171.104	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
150.165.98.40	AS1916 Rede Nacional de Ensino e Pesquisa	`11.66ms` from Fortaleza, BR
67.119.229.88	AS7018 AT&T Enterprises, LLC	`4.14ms` from Los Angeles, US
60.156.251.136	AS17676 SoftBank Corp.	`3.79ms` from Osaka, JP
114.205.52.152	AS9318 SK Broadband Co Ltd	`5.71ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f2 91.220.103.91

traceroute to 91.220.103.91 (91.220.103.91): 64 hops max, 52 byte packets

2 [AS15694] 46.229.157.217 10.341 ms

3 [] 212.91.0.207 6.47 ms

4 [AS8508] 91.220.103.91 6.312 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On September 5th 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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