AS513 is the autonomous system of CERN - European Organization for Nuclear Research. It holds 354,816 IPv4 addresses in 19 prefixes plus 1 IPv6 ranges, mainly in 
Switzerland.
By IPv4 addresses the network ranks #690 worldwide and #5 of 735 networks in Switzerland. That is 1.5% of the country’s IPv4 space.
The largest block is 188.184.0.0 to 188.185.255.255 with 131,072 addresses, geolocated to Geneva.
- IPv4 addresses
- 354,816
- IPv4 prefixes
- 19
- World rank
- #690
- Country share
- 1.5%
- IPv6 ranges
- 1
Addresses by country
- Switzerland 100%
Largest blocks
- 188.184.0.0 Geneva131,072
- 128.141.0.0 Geneva131,072
- 137.138.0.0 Meyrin65,536
- 194.12.128.0 Geneva16,384
- 192.65.183.0 Geneva3,840
- 192.16.155.0 Geneva3,072
- 192.91.236.0 Geneva2,816
- 185.249.56.0 Geneva1,024
Networks of similar size
358,656
358,400
356,864
353,792
353,792
352,768IPv4 prefixes
Questions and answers
Who owns AS513?
Autonomous system AS513 is operated by CERN - European Organization for Nuclear Research.
How many IP addresses does AS513 have?
The network holds 354,816 IPv4 addresses in 19 prefixes, plus 1 IPv6 ranges.
Which country is AS513 in?
The main country is Switzerland.
How big is AS513?
By IPv4 addresses it ranks #690 worldwide.
What is the largest address block of AS513?
188.184.0.0 to 188.185.255.255, 131,072 addresses.