AS number details

AS203821

IT4 Polska Sp. z o.o.  ·  it4polska.pl

Poland

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

AS203821 – IT4 Polska Sp. z o.o.

Field Value
Country Poland
Website it4polska.pl
Hosted domains 17
Number of IPv4 768
Number of IPv6 0
ASN type ISP
Registry ripe
Allocated 10 years ago on Oct 23, 2015
Updated 5 years ago on Nov 16, 2020

IP Ranges

Netblock Company Num of IPs
217.28.134.0/24 Enformatel Sp. z o.o. 256
91.207.184.0/24 Sylwester Harasim 256
91.207.185.0/24 Sylwester Harasim 256

There are no known IPv6 addresses belonging to this network

Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view whois details › 

                                                ASHandle:       AS203821
                                                OrgID:          AS203821
                                                ASName:         AS203821
                                                ASNumber:       AS203821
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's Whois product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP Whois API IP Whois Database Download

Hosted Domains

There are 17 domain names hosted across 11 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
217.28.134.45 ██████████ 4
91.207.184.157 ██████████ 3
91.207.184.42 ██████████ 2
91.207.184.146 ████████ 1
217.28.134.1 ██████████ 1
91.207.184.77 ██████████ 1
91.207.184.152 ██████████ 1
91.207.185.33 ██████████ 1
91.207.185.19 ██████████ 1
217.28.134.76 ███████ 1

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API Hosted Domains Database Download

Peers

There are 6 peers for this ASN.

Peers Name
AS201054 Stowarzyszenie e-Poludnie
AS24482 SG.GS
AS36236 NetActuate, Inc
AS51465 FIXMAP GROUP
AS57608 DG-NET SA
AS62081 Stowarzyszenie e-Poludnie
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS51465 FIXMAP GROUP
AS57608 DG-NET SA
AS62081 Stowarzyszenie e-Poludnie
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Downstreams

There are no downstreams for this ASN.

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Pingable IPs

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

IP Address ASN Details
217.28.134.80 AS203821 IT4 Polska Sp. z o.o. 2.67ms from Warsaw, PL
91.207.185.237 AS203821 IT4 Polska Sp. z o.o. 2.38ms from Warsaw, PL
91.207.184.189 AS203821 IT4 Polska Sp. z o.o. 2.18ms 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
15.204.219.173 AS16276 OVH SAS 1.39ms from Ashburn, US
172.174.75.205 AS8075 Microsoft Corporation 0.41ms from Ashburn, US
203.130.153.125 AS7616 JasTel Network 0.56ms from Bangkok, TH
181.6.212.237 AS7303 Telecom Argentina S.A. 12.79ms from Buenos Aires, AR
87.63.145.141 AS3292 TDC Holding A/S 1.32ms from Copenhagen, DK
99.131.55.141 AS7018 AT&T Enterprises, LLC 2.62ms from Durham, US
87.133.155.61 AS3320 Deutsche Telekom AG 13.58ms from Frankfurt am Main, DE
66.159.223.253 AS394089 Google LLC 0.83ms from Frankfurt am Main, DE
213.153.77.93 AS41998 NetCom BW GmbH 12.38ms from Frankfurt am Main, DE
60.191.169.221 AS4134 CHINANET-BACKBONE 10.59ms from Hangzhou, CN
80.189.79.13 AS6871 Plusnet 5.94ms from London, GB
158.125.162.221 AS786 Jisc Services Limited 4.85ms from London, GB
104.33.119.205 AS20001 Charter Communications Inc 3.55ms from Los Angeles, US
87.27.64.173 AS3269 Telecom Italia S.p.A. 1.91ms from Milan, IT
176.119.175.221 AS12389 PJSC Rostelecom 0.68ms from Moscow, RU
176.152.126.77 AS5410 Bouygues Telecom SA 19.23ms from Paris, FR
14.62.76.109 AS4766 Korea Telecom 2.73ms from Seoul, KR
117.131.95.13 AS24400 Shanghai Mobile Communications Co.,Ltd. 2.98ms from Shanghai, CN
121.224.2.109 AS4134 CHINANET-BACKBONE 4.29ms from Shanghai, CN
47.84.37.173 AS45102 Alibaba (US) Technology Co., Ltd. 0.59ms from Singapore, SG
60.199.192.45 AS9924 Taiwan Fixed Network, Telco and Network Service Provider. 0.77ms from Taipei, TW
99.208.31.13 AS812 Rogers Communications Canada Inc. 0.56ms from Toronto, CA
123.149.239.205 AS4134 CHINANET-BACKBONE 7.84ms from Zhengzhou, CN
216.54.24.77 AS22773 Cox Communications Inc. 5.31ms from Ashburn, US
162.79.29.61 AS4152 USDA 1.21ms from Ashburn, US

Traceroute

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

$
traceroute -a -n -q1 -f8 91.207.185.198
traceroute to 91.207.185.198 (91.207.185.198): 64 hops max, 52 byte packets
Measurement taken from IPinfo ProbeNet in Warsaw, PL
On

Related Networks

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 AS203821 at robtex.

Data 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
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

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

See your IP address
Map IPs

Map IPs

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

Try Map IPs
Summarize IPs

Summarize IPs

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

Try Summarize IPs