Consumer ISP
AS21003 General Post and Telecommunication CompanyASN lookup: IP ranges, prefixes and network type
AS21003 is the autonomous system number (ASN) announced by General Post and Telecommunication Company. It announces 14 prefixes, 300,544 IPv4 addresses in total. Every address inside those ranges is routed by this operator, which is what makes the number the shortest answer to who runs a given address.
Directory data is unavailable at the moment, so the prefix list and the range membership counts are missing from this page. What you can see comes from the committed snapshot and is accurate as far as it goes. Try again shortly.
AS21003 at a glance
| Organisation | General Post and Telecommunication Company |
|---|---|
| Autonomous system | AS21003 |
| Network type | Consumer ISP |
| IPv4 prefixes | Unavailable |
| IPv6 prefixes | Unavailable |
| IPv4 addresses | 300,544Summed across every announced prefix. IPv6 is not counted; the numbers are meaningless at that scale. |
| In known VPN ranges | Unavailable |
| In known datacenter ranges | Unavailable |
Look up an address on AS21003
Paste an address from your own logs. You get the network that announces it, the operator, and the verdict for that specific address.
What AS21003 means for detection
Addresses on General Post and Telecommunication Company are consumer connections: households and small businesses on a fixed line. Our engine classifies them residential, which is the class most likely to be a real customer, and the class fraud tools are least likely to flag. The catch is the residential proxy. An address here can be rented out by whoever holds the connection, and when that happens the ownership data on this page still reads as clean. That is a behavioural signal, not an ownership one.
The verdict for a single address is never settled by the ASN alone. It is the starting point, and IP Detection adds range membership, behaviour and history on top of it before it answers.
Related networks
The same page as JSON
No key and no signup. This is the endpoint this page is rendered from, so anything you read here you can script against.
curl https://ipscanner.io/v1/asn/directory/AS21003
IPScanner. AS21003 General Post and Telecommunication Company, ASN directory. https://ipscanner.io/asn/as21003. Derived from MaxMind GeoLite2.