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WorldIP.io
Organization

ISP Alliance a.s.

Isp Czechia
IPv4 addresses
38,656
CIDR ranges
35
Category
isp
BGP prefixes announced
42
live routing →

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

ISP Alliance a.s. — global IP footprint

Cities where ISP Alliance a.s. has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

Countries served by ISP Alliance a.s.

Every country where this organization has IPv4 allocations, ranked by IPs held.

Czechia 38.7K

ASNs owned by ISP Alliance a.s.

ASNNameIPsPrefixesCountry
AS210712 ISP Alliance a.s. 14.3K 7 CZ
AS47232 ISP Alliance a.s. 10.0K 10 CZ
AS201476 ISP Alliance a.s. 8.7K 12 CZ
AS197393 ISP Alliance a.s. 2.0K 2 CZ
AS52084 ISP Alliance a.s. 2.0K 1 CZ
AS202774 ISP Alliance a.s. 1.0K 1 CZ
AS202131 ISP Alliance a.s. 256 1 CZ
AS201464 ISP Alliance a.s. 256 1 CZ

Largest CIDR ranges

CIDRIPsPTR DensityASNCountryStateCity
78.111.112.0/20 4.1K
97.6%
AS47232 CZ Ústí nad Labem Region Chomutov
93.91.144.0/20 4.1K
92.3%
AS210712 CZ Ústí nad Labem Region Louny
217.75.208.0/20 4.1K
81.2%
AS210712 CZ Ústí nad Labem Region Chomutov
46.29.224.0/21 2.0K
98.8%
AS47232 CZ Ústí nad Labem Region Žatec
46.255.8.0/21 2.0K
97.9%
AS52084 CZ Hradec Králové Region Vrchlabí
109.235.0.0/21 2.0K
99.2%
AS210712 CZ Plzeň Region Klatovy
185.73.104.0/21 2.0K
93.4%
AS201476 CZ Carlsbad Region Karlovy Vary
5.183.12.0/22 1.0K
97.9%
AS201476 CZ Carlsbad Region Karlovy Vary
91.192.32.0/22 1.0K
99.2%
AS210712 CZ Ústí nad Labem Region Chomutov
94.138.116.0/22 1.0K
93.5%
AS201476 CZ Central Bohemia Pňov-Předhradí
94.138.120.0/22 1.0K
90.7%
AS201476 CZ Carlsbad Region Nová Role
185.15.108.0/22 1.0K
98.4%
AS47232 CZ Liberec Region Turnov
185.40.80.0/22 1.0K
99.0%
AS210712 CZ Plzeň Region Klatovy
185.73.100.0/22 1.0K
99.0%
AS201476 CZ Carlsbad Region Karlovy Vary
185.94.4.0/22 1.0K
99.3%
AS210712 CZ Ústí nad Labem Region Louny
185.138.68.0/22 1.0K
93.7%
AS197393 CZ Hradec Králové Region Náchod
185.155.32.0/22 1.0K
0.4%
AS202774 CZ Central Bohemia Rožďalovice
185.167.184.0/22 1.0K
100.0%
AS201476 CZ Carlsbad Region Hroznětín
193.107.160.0/22 1.0K
87.8%
AS47232 CZ — —
193.138.152.0/22 1.0K
99.1%
AS197393 CZ Hradec Králové Region Hronov
213.109.172.0/22 1.0K
98.2%
AS210712 CZ Ústí nad Labem Region Litvínov
5.39.200.0/23 512
12.5%
AS47232 CZ Central Bohemia Jirny
77.104.194.0/24 256
94.5%
AS201476 CZ Carlsbad Region Sokolov
77.104.210.0/24 256
95.7%
AS201476 CZ — —
77.104.216.0/24 256
97.3%
AS201476 CZ — —
77.104.223.0/24 256
98.8%
AS201476 CZ — —
77.104.240.0/24 256
98.8%
AS201476 CZ — —
77.104.245.0/24 256
97.7%
AS201476 CZ — —
94.140.25.0/24 256
68.4%
AS47232 CZ — —
148.59.93.0/24 256
71.9%
AS47232 CZ Pardubice Region Holice
185.52.172.0/24 256
99.6%
AS47232 CZ Prague Prague
185.52.173.0/24 256
99.2%
AS202131 CZ Hradec Králové Region Nová Paka
185.74.61.0/24 256
100.0%
AS201464 CZ — —
185.151.171.0/24 256
98.0%
AS47232 CZ — —
195.26.25.0/24 256
99.2%
AS47232 CZ Pardubice Region Holice

Frequently Asked Questions

How many IP addresses does ISP Alliance a.s. own?

ISP Alliance a.s. controls 38.7K IPv4 addresses distributed across 35 CIDR ranges. The organization is registered in Czechia.

What ASNs does ISP Alliance a.s. operate?

ISP Alliance a.s. operates 8 Autonomous Systems. Each ASN represents an independently routed network that ISP Alliance a.s. manages for internet traffic delivery.

What type of organization is ISP Alliance a.s.?

ISP Alliance a.s. is categorized as isp. This classification is based on the organization's primary use of its IP address allocations.

Last updated: 2026-07-18 11:40:32 UTC
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