AS21859
Zenlayer Inc
AS21859 summary
Where AS21859 ranks
Countries where this operator is among the twelve largest by IPv4 address space, and its position there. An operator active in a country but outside its top twelve does not appear — so this is a list of where AS21859 is significant, not everywhere it has a presence.
| Country | IPv4 addresses | Rank there |
|---|---|---|
 Hong Kong SAR China | 136K | #43 |
 Singapore | 93K | #44 |
 Indonesia | 74K | #30 |
 Vietnam | 52K | #18 |
 Philippines | 32K | #25 |
 Malaysia | 28K | #34 |
 United Arab Emirates | 22K | #16 |
 Saudi Arabia | 14K | #44 |
 Peru | 9K | #28 |
 Portugal | 5K | #42 |
Show all 13 countriesShow fewer
| Country | IPv4 addresses | Rank there |
|---|---|---|
 Kuwait | 2K | #28 |
 Zambia | 512 | #22 |
 Macao SAR China | 512 | #17 |
IPv4 only, counted where the address space is observed rather than where a registry allocated it, and limited to each country's twelve largest operators.
What an AS number is
An Autonomous System is a network under one routing policy — an ISP, a hosting provider, a large company. The AS number identifies it globally, and BGP uses it to work out how traffic reaches the addresses that network announces.
When a lookup tells you an address belongs to AS21859, it is telling you which organisation announces the route to it. That is usually a better answer to “who is this?” than the city on the map, because routing is a fact while geolocation is an inference.
Related
Get the ASN for any IP
Same data as this page, as JSON. 45 requests a minute with no key, 10,000 a month free with one.
curl https://api.ipaddresstoday.com/api/v1/8.8.8.8