Autonomous System details

AS51800

FIBER Network s.r.o.  ·  fiber.cz

Czechia

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

Sign up for free ›

AS51800 – FIBER Network s.r.o.

Field Value
Country Czechia
Website fiber.cz
Hosted domains 38
IPv4 addresses 2,048
IPv6 addresses 79,228,162,514,264,338,000,000,000,000
ASN type ISP
Registry ripe
Allocated 15 years ago on Nov 05, 2010
Updated 6 years ago on Mar 27, 2020

IP Ranges

Netblock Company Num of IPs
217.28.80.0/21 FIBER Networks customers 2,048
Netblock Company
2a02:28a8::/32 FIBER Network s.r.o.
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:       AS51800
                                                OrgID:          AS51800
                                                ASName:         AS51800
                                                ASNumber:       AS51800
                                                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 38 domain names hosted across 16 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
217.28.81.67 ██████████ 7
217.28.81.68 ██████████ 7
217.28.82.23 ██████████ 6
217.28.80.23 ██████████ 4
217.28.80.2 █████████ 3
217.28.84.4 ██████████ 2
217.28.82.9 ██████████ 1
217.28.82.70 ██████████ 1
217.28.81.66 ██████████ 1
217.28.84.38 ███████ 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 22 peers for this ASN.

Peers Name
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS198150 SIACOM JSC
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS24482 SG.GS
AS263444 Open X Tecnologia Ltda
AS29504 Freenet Liberec, z.s.
AS32590 Valve Corporation
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS40994 Hohl IT e.U.
AS42000 Futruy s.r.o.
AS4455 IX Reach Ltd
AS47200 NIX.CZ z.s.p.o.
AS49025 PRO-ZETA a.s.
AS49544 i3D.net B.V
AS51184 Fonira Telekom GmbH
AS51400 SPOJE.NET s.r.o.
AS6204 INTERKVM HOST SRL
AS6663 Euroweb Romania S.R.L.
AS6881 NIX.CZ z.s.p.o.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
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 2 upstreams for this ASN.

upstreams Name
AS49025 PRO-ZETA a.s.
AS51400 SPOJE.NET s.r.o.
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 is 1 peer for this ASN.

Downstreams Name
AS51400 SPOJE.NET s.r.o.
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

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

IP Address ASN Details
2a02:28a8:0:502::1 AS51800 FIBER Network s.r.o. 0.33ms from Prague, CZ
217.28.82.69 AS51800 FIBER Network s.r.o. 0.45ms from Prague, CZ
217.28.81.9 AS51800 FIBER Network s.r.o. 0.35ms from Prague, CZ
2a02:28a8:416::38 AS51800 FIBER Network s.r.o. 0.75ms from Prague, CZ
217.28.84.74 AS51800 FIBER Network s.r.o. 0.35ms from Prague, CZ
2a02:28a8:f1c:3181::1 AS51800 FIBER Network s.r.o. 0.73ms from Prague, CZ
217.28.80.46 AS51800 FIBER Network s.r.o. 0.28ms from Prague, CZ
2a02:28a8:ffff:3801::2 AS51800 FIBER Network s.r.o. 0.32ms from Prague, CZ

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
81.241.12.56 AS5432 Proximus NV 1.66ms from Brussels, BE
95.44.49.152 AS5466 Eircom Limited 1.81ms from Dublin, IE
120.83.142.40 AS17816 China Unicom IP network China169 Guangdong province 4.90ms from Guangzhou, CN
121.199.27.88 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.11ms from Hangzhou, CN
31.43.117.104 AS56433 ASLANUA NETWORK 0.58ms from Kyiv, UA
119.12.143.56 AS34779 T-2, d.o.o. 1.58ms from Ljubljana, SI
185.50.117.88 AS42947 Telfy Telecom S.L. 7.85ms from Madrid, ES
210.235.99.136 AS2516 KDDI CORPORATION 1.75ms from Osaka, JP
123.221.42.24 AS4713 NTT DOCOMO BUSINESS,Inc. 5.19ms from Osaka, JP
39.66.97.168 AS4837 CHINA UNICOM China169 Backbone 6.46ms from Qingdao, CN
14.55.63.168 AS4766 Korea Telecom 4.46ms from Seoul, KR
138.75.3.24 AS4773 MobileOne Ltd. Mobile/Internet Service Provider Singapore 2.15ms from Singapore, SG
188.214.158.40 AS9009 M247 Europe SRL 0.12ms from Singapore, SG
179.165.26.40 AS26599 TELEFÔNICA BRASIL S.A 1.63ms from São Paulo, BR
4.216.67.8 AS8075 Microsoft Corporation 0.66ms from Tokyo, JP
104.40.155.216 AS8075 Microsoft Corporation 0.23ms from Amsterdam, NL
151.106.99.24 AS47583 Hostinger International Limited 0.15ms from Asheville, US
91.104.114.216 AS213155 Yettel Hungary Ltd. 11.95ms from Budapest, HU
201.251.124.104 AS22927 Telefonica de Argentina 1.51ms from Buenos Aires, AR
119.27.170.104 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.83ms from Chengdu, CN
151.245.140.24 AS57043 HOSTKEY B.V. 0.40ms from Helsinki, FI
220.121.56.88 AS4766 Korea Telecom 0.63ms from Incheon, KR
81.106.197.56 AS5089 Virgin Media Limited 6.39ms from London, GB
47.138.229.56 AS5650 Frontier Communications of America, Inc. 5.75ms from Los Angeles, US
124.18.145.248 AS18126 Chubu Telecommunications Company, Inc. 6.69ms from Osaka, JP

Traceroute

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

$
traceroute -a -n -q1 -f3 217.28.84.74
traceroute to 217.28.84.74 (217.28.84.74): 64 hops max, 52 byte packets
3 [] 91.210.16.91 0.445 ms
4 [AS51800] 217.28.84.74 0.372 ms
Measurement taken from IPinfo ProbeNet in Prague, CZ
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 AS51800 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