AS15373

Access unlimited lookups, API and downloads, data enrichment, and Probenet Live.

Summary

IP address summary information
Name	Politechnika Czestochowska
Country	Poland
Website	host.io/pcz.pl·pcz.pl
Hosted domains	18
IPv4 addresses	4,608
IPv6 addresses	7.92 × 10²⁸
ASN type	Education
Registry	RIPE
Allocated	56 years ago on Jan 1, 1970
Updated	8 years ago on Sep 4, 2018

Ranking

#27,267

Overall rank

among 74,706 networks

Traffic

#21,684

Infrastructure

#12,998

#603inPoland

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

Poland
100%

Held location over 90 days: 100%
Held location over 1 year: 99%
Median days between moves: 492 days
Geolocation scope: National

How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.

Activity

A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.

Mon

IP Ranges

Netblock	Company	Num of IPs
212.87.224.0/21	Politechnika Czestochowska	2,048
212.87.232.0/23	Politechnika Czestochowska	512
212.87.234.0/23	Politechnika Czestochowska	512
212.87.236.0/23	Politechnika Czestochowska	512
212.87.238.0/23	Politechnika Czestochowska	512
212.87.251.0/24	Politechnika Czestochowska	256
212.87.253.0/24	Politechnika Czestochowska	256

IP Ranges

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Hosted Domains

There are 18 domain names hosted across 14 IP addresses on this ASN.

IP Address	Domain	Count
212.87.224.110		2
212.87.238.20		2
212.87.229.147		2
212.87.234.50		2
212.87.229.109		2

Places

IPs in this network linked to physical places, based on their Wi-Fi networks.

Places IPs7
University6
Travel Agency1

Category	In AS15373	Example IP
University	6	212.87.229.18
Travel Agency	1	212.87.236.179

New

IPinfo Places identifies hotels, airports, stadiums, and more with building-level precision.

Explore Places

Places

Peers

There are 4 peers for this ASN.

ASN	Name	Rank
AS5617	Orange Polska Spolka Akcyjna
AS8501	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center
AS25084	Politechnika Czestochowska
AS196844	PIONIER AS ams ix

Upstreams

There are 2 upstreams for this ASN.

ASN	Name	Rank
AS8501	Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center
AS25084	Politechnika Czestochowska

Downstreams

There are 0 downstreams for this ASN.

No downstreams found.

Pingable IPs

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

IP Address	ASN	Details
212.87.225.121 Ping	AS15373Politechnika Czestochowska	5.68ms from Warsaw, PL
212.87.235.4 Ping	AS15373Politechnika Czestochowska	5.78ms from Warsaw, PL
212.87.236.1 Ping	AS15373Politechnika Czestochowska	5.79ms from Warsaw, PL
212.87.231.76 Ping	AS15373Politechnika Czestochowska	5.71ms from Warsaw, PL
212.87.234.1 Ping	AS15373Politechnika Czestochowska	5.79ms from Warsaw, PL
212.87.239.1 Ping	AS15373Politechnika Czestochowska	5.93ms from Warsaw, PL
212.87.238.18 Ping	AS15373Politechnika Czestochowska	5.72ms from Warsaw, PL
212.87.229.145 Ping	AS15373Politechnika Czestochowska	5.68ms from Warsaw, PL
212.87.228.134 Ping	AS15373Politechnika Czestochowska	5.89ms from Warsaw, PL
2a01:698:0:2::116 Ping	AS15373Politechnika Czestochowska	5.83ms from Warsaw, PL

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS15373


212.87.225.105	Częstochowa, Poland
212.87.225.18	Częstochowa, Poland
212.87.225.109	Częstochowa, Poland
212.87.225.138	Częstochowa, Poland
212.87.225.121	Częstochowa, Poland
212.87.225.14	Częstochowa, Poland
212.87.225.90	Częstochowa, Poland
212.87.225.92	Częstochowa, Poland
212.87.225.19	Częstochowa, Poland
212.87.225.93	Częstochowa, Poland

Important routers in AS15373

Traceroute

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

$ traceroute -a -n -q1 -f2 212.87.230.193

traceroute to 212.87.230.193 (212.87.230.193): 64 hops max, 52 byte packets

2 [] 195.149.233.134 10.955 ms

3 [AS15373] 212.87.225.105 11.281 ms

4 [AS15373] 212.87.230.193 11.774 ms

Measurement taken from

IPinfo ProbeNet in Wrocław, PL

On September 17, 2026

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS15373 at robtex.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get started for free Contact sales

Our IP tools

Explore all tools

What is my IP?

Test our data accuracy by viewing insights from your IP address.

See your IP address

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs

AS15373

Summary

Ranking

Geolocation

Countries by IPv4 share

Activity

IP Ranges

IP Ranges

WHOIS

Hosted Domains

Places

Places

Peers

Upstreams

Downstreams

Pingable IPs

Other Pingable IPs

Pingable IPs

Important routers in AS15373

Important routers in AS15373

Traceroute

Related Networks

AS16296

AS197630

AS198230

AS199981

AS210866

What is an ASN?

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Traceroute

Ranking

IP Ranges

Important routers in AS15373

Geolocation

Countries by IPv4 share

Pingable IPs

Other Pingable IPs

Activity

Places

AS16296

AS197630

AS198230

AS199981

AS210866

AS31599