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CEZNET s.r.o.

CEZNET s.r.o. uses 43,188 IPv4 addresses in 36 ranges, and 13 IPv6 ranges, by the registry records IP Company reads.

ceznet.cz·Czechia

43,188
IPv4 addresses
36
IPv4 ranges
13
IPv6 ranges
7
ASes it operates
1
country

About the company

Who it is, where it is registered and who owns it.

Description
Czech company
Founded
2005
Headquarters
Prague, Czechia
Parent
ČEZ Group

Who routes its space

The networks announcing its IPv4, by the addresses each announces.

  1. AS6740 CEZNET s.r.o.22,272 · 51.57%
  2. AS49101 CEZNET s.r.o.7,167 · 16.59%
  3. AS204064 CEZNET s.r.o.3,581 · 8.29%
  4. AS198002 CEZNET s.r.o.3,264 · 7.56%
  5. AS16019 Vodafone Czech Republic a.s.2,048 · 4.74%
  6. AS201654 CEZNET s.r.o.1,536 · 3.56%
  7. AS57728 CEZNET s.r.o.1,232 · 2.85%
  8. AS51449 Kabelova televize Usti nad Orlici, spol. s r. o.1,024 · 2.37%
  9. AS39791 Telco Pro Services, a. s.544 · 1.26%
  10. AS13036 T-Mobile Czech Republic a.s.512 · 1.19%
  11. AS174 Cogent Communications, LLC4 · 0.01%
  12. AS29208 Quantcom a.s.4 · 0.01%

Where its space is

Its IPv4 that IP Geolocation places, by country. A /24 counts for the company using most of it.

  1. Czechia43,264 · 100.00%

Networks it operates

The autonomous systems registered under its domain, by the IPv4 each announces anywhere.

ASNNAMETYPEREGISTEREDIPV4
AS6740CEZNET s.r.o.ISPCzechia41,984
AS57728CEZNET s.r.o.ISPCzechia15,360
AS49101CEZNET s.r.o.ISPCzechia13,312
AS198002CEZNET s.r.o.ISPCzechia8,192
AS204064CEZNET s.r.o.ISPCzechia3,840
AS201654CEZNET s.r.o.ISPCzechia1,792
AS203450CEZNET s.r.o.ISPCzechia0

How its networks peer

Each network's peering policy, traffic, ratio and reach as its operator states them, with the internet exchanges and facilities it is at.

ASNPOLICYTRAFFICRATIOSCOPEEXCHANGESFACILITIES
AS57728Open00
AS49101Open00

What the databases see

Addresses each address-keyed database holds in its IPv4, as a share of it, with the largest providers. A /24 counts for the company using most of it; counts overlap.

Speed tests

Speeds measured from its space in the last 90 days.

From M-Lab
94.0 Mbps
median download
100 Mbps
median upload
1,126
download tests
1,079
upload tests

Its address ranges

Its largest IPv4 ranges, then its IPv6 ones, as IP Company draws them, a CIDR a row, with the network announcing each.

RANGEIPV4ORIGIN
212.90.224.0/198,192AS6740
213.235.102.0/23512AS6740
213.235.104.0/212,048AS6740
213.235.112.0/204,096AS6740
82.202.44.0/221,024AS6740
82.202.48.0/204,096AS6740
149.255.83.48-149.255.95.2233,248AS198002
46.167.201.0-46.167.208.2552,048AS16019
82.144.128.0/212,048AS49101
82.144.148.0-82.144.155.91,802AS49101
82.144.137.0-82.144.142.2551,536AS49101
82.144.155.11-82.144.159.2551,269AS49101
185.151.172.0/221,024AS204064
185.193.128.0/221,024AS6740
185.67.188.0/221,024AS201654
82.202.0.0/221,024AS6740
81.25.22.32-81.25.25.255992AS57728
185.201.12.87-185.201.15.255937AS204064
185.116.48.0/23512AS204064
185.116.50.0/24256AS204064
185.151.168.0/23512AS201654
80.95.244.0/23512AS13036
82.144.144.0/23512AS49101
82.144.146.0/23512AS51449
185.115.180.71-185.115.181.220406AS204064
185.115.182.0/24256AS39791
185.115.183.0/24256AS204064
82.144.136.0/24256AS51449
82.144.143.0/24256AS51449
82.202.13.0/24256AS6740
89.111.118.0/24256AS39791
81.25.26.32/2732AS57728
81.25.26.64/2664AS57728
81.25.26.128/25128AS57728
185.201.12.0-185.201.12.8586AS204064
185.115.180.0/2664AS204064
185.115.180.64/304AS204064
185.115.180.68/312AS204064
185.115.181.222/312AS204064
185.115.181.224/2732AS204064
89.111.126.128/2732AS39791
149.255.95.240/2816AS198002
81.25.22.0/2816AS57728
149.6.24.88/304AS174
195.250.139.232/304AS29208
2a0a:bdc0::/29
2a07:7a00:1::-2a07:7a07:ffff:ffff:ffff:ffff:ffff:ffffAS204064
2a00:1801::-2a00:1806:ffff:ffff:ffff:ffff:ffff:ffff
2a02:d01::-2a02:d06:ffff:ffff:ffff:ffff:ffff:ffff
2a05:1201::/32AS201654
2a05:1202::/31AS201654
2a02:d00::/32AS49101
2a02:d07::/32AS51449
2a05:1200::/32AS201654
2a03:1180:1::-2a03:1180:ffff:ffff:ffff:ffff:ffff:ffffAS198002
2a00:1800:ff3::-2a00:1800:ffff:ffff:ffff:ffff:ffff:ffffAS57728
2a00:1800:108::-2a00:1800:fef:ffff:ffff:ffff:ffff:ffffAS57728
2a00:1800:2::-2a00:1800:ff:ffff:ffff:ffff:ffff:ffffAS57728
2a07:7a00::/48AS39791

Names it registers under

The holder names its registry records give, by the IPv4 under each.

  1. CEZNET s.r.o.42,388 · 98.15%
  2. CEZnet, a.s.512 · 1.19%
  3. CEZNET BNG 1 BROADBAND CGN256 · 0.59%
  4. CEZNET MMO BROADBAND CGN32 · 0.07%
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