Autonomous System 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 22
IPv4 addresses 768
IPv6 addresses 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
91.207.184.0/24 Sylwester Harasim 256
91.207.185.0/24 Sylwester Harasim 256
217.28.134.0/24 Enformatel Sp. z o.o. 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 & Database

Hosted Domains

There are 22 domain names hosted across 13 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
91.207.184.157 ██████████ 5
217.28.134.45 ██████████ 4
91.207.184.42 █████████ 2
217.28.134.1 ██████████ 2
91.207.184.152 ██████████ 1
91.207.185.19 ██████████ 1
91.207.184.35 ██████████ 1
91.207.184.77 ██████████ 1
217.28.134.76 ███████ 1
91.207.184.146 ████████ 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 & Database

Peers

There are 4 peers for this ASN.

Peers Name
AS201054 Stowarzyszenie e-Poludnie
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 & Database

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 & Database

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 & Database

Pingable IPs

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

IP Address ASN Details
217.28.134.22 AS203821 IT4 Polska Sp. z o.o. 2.90ms from Warsaw, PL
91.207.185.25 AS203821 IT4 Polska Sp. z o.o. 2.15ms from Warsaw, PL
91.207.184.189 AS203821 IT4 Polska Sp. z o.o. 2.09ms 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
81.205.134.141 AS1136 KPN B.V. 2.54ms from Amsterdam, NL
99.147.217.93 AS7018 AT&T Enterprises, LLC 3.57ms from Atlanta, US
66.26.170.109 AS11426 Charter Communications Inc 4.34ms from Charlotte, US
101.96.91.253 AS24173 Netnam Company 0.80ms from Da Nang, VN
139.4.72.221 AS702 Verizon Business 0.60ms from Frankfurt am Main, DE
177.211.33.45 AS134175 SH2206-AP 0.72ms from Hong Kong, HK
31.53.65.77 AS2856 British Telecommunications PLC 7.90ms from London, GB
84.233.225.189 AS3257 GTT Communications Inc. 0.65ms from Milan, IT
160.94.73.189 AS217 University of Minnesota 0.54ms from Minneapolis, US
66.45.228.77 AS19318 Interserver, Inc 0.41ms from New York City, US
177.44.207.13 AS262907 BRASIL TECPAR | AMIGO | AVATO 8.67ms from Novo Hamburgo, BR
222.173.250.141 AS4134 CHINANET-BACKBONE 5.92ms from Qingdao, CN
18.210.200.173 AS14618 Amazon.com, Inc. 0.20ms from Reston, US
36.38.53.109 AS9770 LG HelloVision Corp. 7.48ms from Seoul, KR
34.220.119.93 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
5.103.224.189 AS44869 FIBIA P/S 0.73ms from Copenhagen, DK
65.218.30.253 AS701 Verizon Business 1.67ms from Denver, US
58.252.78.253 AS17816 China Unicom IP network China169 Guangdong province 3.91ms from Guangzhou, CN
80.220.150.221 AS1759 Telia Finland Oyj 6.85ms from Helsinki, FI
89.212.70.45 AS34779 T-2, d.o.o. 1.33ms from Ljubljana, SI
105.172.249.205 AS37119 UNITEL SA 1.25ms from Luanda, AO
24.111.219.77 AS11232 Midcontinent Communications 8.00ms from Minneapolis, US
104.191.140.141 AS7018 AT&T Enterprises, LLC 12.18ms from San Antonio, US
13.124.209.45 AS16509 Amazon.com, Inc. 0.15ms from Seoul, KR
14.48.105.189 AS4766 Korea Telecom 6.97ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -f2 217.28.134.21
traceroute to 217.28.134.21 (217.28.134.21): 64 hops max, 52 byte packets
3 *
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