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
91.207.185.237 AS203821 IT4 Polska Sp. z o.o. 2.38ms from Warsaw, PL
217.28.134.80 AS203821 IT4 Polska Sp. z o.o. 2.67ms 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
173.73.5.45 AS701 Verizon Business 2.26ms from Ashburn, US
52.170.146.93 AS8075 Microsoft Corporation 0.40ms from Ashburn, US
96.38.80.237 AS20115 Charter Communications LLC 16.69ms from Atlanta, US
84.243.87.157 AS9050 Orange Romania S.A. 0.46ms from Bucharest, RO
184.17.85.205 AS5650 Frontier Communications of America, Inc. 5.36ms from Chicago, US
92.33.184.157 AS2119 Telenor Norge AS 6.68ms from Copenhagen, DK
173.216.194.13 AS19108 Optimum 18.43ms from Dallas, US
160.191.85.125 AS153022 ADM TECHNOLOGY JOINT STOCK COMPANY 1.15ms from Ho Chi Minh City, VN
196.220.162.93 AS37564 Wirulink Pty Ltd 6.71ms from Johannesburg, ZA
86.68.26.141 AS15557 Societe Francaise Du Radiotelephone - SFR SA 1.55ms from Lyon, FR
73.228.175.45 AS7922 Comcast Cable Communications, LLC 6.38ms from Minneapolis, US
34.231.233.13 AS14618 Amazon.com, Inc. 0.15ms from Reston, US
3.224.203.141 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
209.14.70.253 AS268581 QNAX LTDA 0.18ms from Sao Paulo, BR
212.143.165.141 AS1680 Cellcom Fixed Line Communication L.P 2.79ms from Tel Aviv, IL
210.134.182.45 AS4678 Canon IT Solutions Inc. 0.51ms from Tokyo, JP
5.57.203.221 AS212865 netconnect AG 0.90ms from Zuerich, CH
97.177.54.173 AS6167 Verizon Business 13.23ms from Boston, US
200.243.60.13 AS4230 CLARO S.A. 13.00ms from Brasilia, BR
1.156.246.13 AS1221 Telstra Limited 9.00ms from Brisbane, AU
35.190.193.13 AS396982 Google LLC 0.15ms from Brussels, BE
208.46.110.77 AS209 CenturyLink Communications, LLC 1.98ms from Dallas, US
84.165.55.157 AS3320 Deutsche Telekom AG 6.14ms from Frankfurt am Main, DE
84.147.210.125 AS3320 Deutsche Telekom AG 4.55ms from Frankfurt am Main, DE
154.213.247.157 AS132839 POWER LINE DATACENTER 1.37ms from Hong Kong, HK

Traceroute

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

$
traceroute -a -n -q1 -f3 91.207.184.189
traceroute to 91.207.184.189 (91.207.184.189): 64 hops max, 52 byte packets
3 [AS197155] 5.187.51.1 0.816 ms
Measurement taken from IPinfo ProbeNet in Gdynia, 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