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 37
IPv4 addresses 2,048
IPv6 addresses 79,228,162,514,264,337,593,543,950,336
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 37 domain names hosted across 15 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
217.28.81.67 ████████ 7
217.28.82.23 ██████ 6
217.28.81.68 ██████████ 6
217.28.80.23 ██████████ 4
217.28.80.2 ████████ 3
217.28.84.4 ██████████ 2
217.28.82.70 ██████████ 1
217.28.84.6 █████████ 1
217.28.84.5 █████████ 1
217.28.84.8 ██████████ 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 26 peers for this ASN.

Peers Name
AS14840 BR.Digital Telecom
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS198150 SIACOM JSC
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS22356 Durand do Brasil Ltda
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.
AS53062 ALT | GRUPO BRASIL TECPAR
AS57463 NetIX Communications JSC
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
217.28.80.46 AS51800 FIBER Network s.r.o. 0.31ms from Prague, CZ
217.28.84.73 AS51800 FIBER Network s.r.o. 0.36ms from Prague, CZ
2a02:28a8:f1c:3181::2 AS51800 FIBER Network s.r.o. 1.16ms from Prague, CZ
2a02:28a8:416::38 AS51800 FIBER Network s.r.o. 0.62ms from Prague, CZ
2a02:28a8:0:501::2 AS51800 FIBER Network s.r.o. 0.32ms from Prague, CZ
217.28.81.145 AS51800 FIBER Network s.r.o. 0.34ms from Prague, CZ
2a02:28a8:ffff:3801::2 AS51800 FIBER Network s.r.o. 0.34ms from Prague, CZ
217.28.82.69 AS51800 FIBER Network s.r.o. 0.47ms 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
205.220.174.56 AS22843 Proofpoint, Inc. 0.69ms from Atlanta, US
93.238.246.168 AS3320 Deutsche Telekom AG 4.89ms from Frankfurt am Main, DE
94.179.244.88 AS6849 JSC "Ukrtelecom" 10.54ms from Kyiv, UA
45.150.182.88 AS62240 Clouvider 0.19ms from Los Angeles, US
152.53.201.104 AS214996 netcup GmbH 0.20ms from Manassas, US
128.186.72.24 AS2553 Florida State University 10.36ms from Miami, US
116.73.197.184 AS17488 Hathway IP Over Cable Internet 7.43ms from Mumbai, IN
222.231.82.40 AS18144 Enecom,Inc. 8.90ms from Osaka, JP
67.247.3.168 AS12271 Charter Communications Inc 3.92ms from Piscataway, US
18.211.249.72 AS14618 Amazon.com, Inc. 0.13ms from Reston, US
83.248.116.248 AS1257 Tele2 Sverige AB 3.75ms from Stockholm, SE
1.164.26.24 AS3462 Data Communication Business Group 1.90ms from Taipei, TW
89.231.120.40 AS29314 VECTRA S.A. 8.31ms from Warsaw, PL
93.136.147.184 AS5391 Hrvatski Telekom d.d. 10.13ms from Zagreb, HR
212.10.65.8 AS39642 Norlys Digital A/S 11.44ms from Copenhagen, DK
100.42.147.56 AS20030 Artelco 13.22ms from Dallas, US
87.148.135.120 AS3320 Deutsche Telekom AG 7.39ms from Frankfurt am Main, DE
178.142.4.216 AS9145 EWE TEL GmbH 6.22ms from Hamburg, DE
104.214.182.40 AS8075 Microsoft Corporation 1.11ms from Hong Kong, HK
210.219.172.24 AS9318 SK Broadband Co Ltd 4.24ms from Incheon, KR
84.129.201.56 AS3320 Deutsche Telekom AG 5.54ms from Nuernberg, DE
210.235.99.136 AS2516 KDDI CORPORATION 1.75ms from Osaka, JP
39.79.89.248 AS4837 CHINA UNICOM China169 Backbone 6.01ms from Qingdao, CN
76.27.93.104 AS7922 Comcast Cable Communications, LLC 8.34ms from Salt Lake City, US
67.183.137.168 AS7922 Comcast Cable Communications, LLC 5.64ms from Seattle, US

Traceroute

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

$
traceroute -a -n -q1 -f4 -m14 217.28.85.232
traceroute to 217.28.85.232 (217.28.85.232): 14 hops max, 52 byte packets
4 [AS6762] 195.22.214.84 10.587 ms
5 *
6 [AS6762] 213.144.187.50 17.945 ms
8 [AS51800] 217.28.81.157 18.624 ms
9 [AS51800] 217.28.80.252 18.413 ms
10 [AS51800] 217.28.80.254 18.714 ms
11 [AS51800] 217.28.80.252 18.453 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in Copenhagen, DK
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