IP range details

81.91.80.0/20

AS39790 · Web4U s.r.o.

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

Summary

Country	Czechia
Domain	web4u.cz
ASN	AS39790
Registry	ripe
Hosted IPs	4,096
ID	CZ-WEB4USRO-20060425

WHOIS Details

inetnum:        81.91.80.0 - 81.91.95.255
netname:        CZ-WEB4USRO-20060425
country:        CZ
org:            ORG-WS296-RIPE
admin-c:        WM3536-RIPE
tech-c:         WM3536-RIPE
status:         ALLOCATED PA
mnt-by:         MNT-WEB4U
mnt-by:         RIPE-NCC-HM-MNT
created:        2022-09-28T14:32:39Z
last-modified:  2022-09-28T14:32:39Z
source:         RIPE
abuse-email:    abuse@web4u.cz
abuse-c:        AR68991-RIPE
abuse-org:      ORG-WS296-RIPE

organisation:   ORG-WS296-RIPE
org-name:       Web4U s.r.o.
country:        CZ
org-type:       LIR
address:        Mahlerovy sady 1
address:        13000
address:        Praha 3
address:        CZECH REPUBLIC
phone:          +420270001456
e-mail:         ripe@web4u.cz
admin-c:        WM3536-RIPE
tech-c:         WM3536-RIPE
abuse-c:        AR68991-RIPE
mnt-ref:        MNT-WEB4U
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-WEB4U
created:        2022-09-20T07:29:12Z
last-modified:  2022-09-20T07:29:13Z
source:         RIPE

role:           WEB4U network operations
address:        CZECH REPUBLIC
address:        Praha 3
address:        13000
address:        Mahlerovy sady 1
phone:          +420270001456
e-mail:         praha@web4u.cz
admin-c:        FP15631-RIPE
tech-c:         FP15631-RIPE
abuse-mailbox:  abuse@web4u.cz
nic-hdl:        WM3536-RIPE
mnt-by:         MNT-WEB4U
created:        2022-09-20T07:29:12Z
last-modified:  2022-10-17T12:21:14Z
source:         RIPE

route:          81.91.80.0/20
descr:          Web4U
origin:         AS39790
mnt-by:         MNT-WEB4U
created:        2007-04-18T15:09:49Z
last-modified:  2007-04-18T15:09:49Z
source:         RIPE

Hosted domains

There are 42,774 domain names hosted across 485 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.91.86.14	pregis.cz	21861
81.91.86.12	institutvk.cz	5694
81.91.86.13	lustry-do-obyvaku.cz	3523
81.91.86.11	praguechess.cz	2782
81.91.86.10	isis.cz	735
81.91.84.215	pavelgottfried.eu	410
81.91.84.51	skiresort.cz	396
81.91.92.221	respono.cz	354
81.91.84.107	apartmanyradka.cz	333
81.91.82.42	kralovedvorsko.cz	244
81.91.84.138	economics.cz	236
81.91.82.209	whirlpool-mikulov.cz	178
81.91.84.210	obcanske-forum.eu	174
81.91.85.211	javos.cz	167
81.91.92.70	uskladnim.cz	160
81.91.84.73	pujcovna-detskych-kostymu.cz	152
81.91.84.131	infoolomouc.cz	134
81.91.85.141	bulldogfinance.cz	132
81.91.85.97	csop5.cz	127
81.91.85.90	trailpoint.cz	125

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

IP address subranges within this IP range

Get all this data and more in JSON format using our ASN API Read More

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API 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