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AS4637

AS4637 is Telstra International Limited.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (3 Nov 2026)

Short answer

AS4637 belongs to Telstra International Limited. DB-IP Lite attributes 1,231,616 IPv4 addresses in 257 ranges and 3 IPv6 ranges to it, 45% of the IPv4 space in Hong Kong SAR China. The number is registered with APNIC in Hong Kong SAR China on 30 Oct 1995.

Facts for AS4637
Operator (DB-IP)Telstra International Limited
IPv4 addresses1,231,616
IPv4 ranges257
IPv6 ranges3
RegistryAPNIC
Registered30 Oct 1995
Registry countryHong Kong SAR China (HK)

Does it publish a geofeed?

We haven’t checked this network’s registry records for a geofeed yet. The Truth Check looks for one live for any address you test.

Shared addresses (CGNAT)

Telstra International Limited hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 3 IPv6 ranges for AS4637, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

HK45%
GB25%
JP7%
SG5%
IN4%
US4%
AU4%
TW2%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
5.226.185.0 – 5.226.185.2555.226.185.0/24256
13.142.0.0 – 13.143.15.25513.142.0.0/16, 13.143.0.0/2069,632
13.143.32.0 – 13.143.47.25513.143.32.0/204,096
31.58.172.0 – 31.58.175.25531.58.172.0/221,024
31.59.76.0 – 31.59.77.25531.59.76.0/23512
37.153.152.0 – 37.153.152.25537.153.152.0/24256
42.99.128.0 – 42.99.255.25542.99.128.0/1732,768
58.145.195.0 – 58.145.196.25558.145.195.0/24, 58.145.196.0/24512
58.145.198.0 – 58.145.203.25558.145.198.0/23, 58.145.200.0/221,536
58.145.225.0 – 58.145.225.25558.145.225.0/24256
58.145.228.0 – 58.145.228.25558.145.228.0/24256
58.145.234.0 – 58.145.234.25558.145.234.0/24256
61.8.32.0 – 61.8.32.25561.8.32.0/24256
61.8.34.0 – 61.8.63.25561.8.34.0/23, 61.8.36.0/22 …7,680
61.14.128.0 – 61.14.163.25561.14.128.0/19, 61.14.160.0/229,216
61.14.165.0 – 61.14.171.25561.14.165.0/24, 61.14.166.0/23 …1,792
61.14.173.0 – 61.14.191.25561.14.173.0/24, 61.14.174.0/23 …4,864
61.87.128.0 – 61.87.191.25561.87.128.0/1816,384
63.133.192.0 – 63.133.207.25563.133.192.0/204,096
63.160.0.0 – 63.160.0.25563.160.0.0/24256
63.160.4.0 – 63.160.5.25563.160.4.0/23512
63.160.32.0 – 63.160.39.25563.160.32.0/212,048
63.160.224.0 – 63.160.255.25563.160.224.0/198,192
63.161.16.0 – 63.161.31.25563.161.16.0/204,096
63.161.224.0 – 63.161.255.25563.161.224.0/198,192
63.164.160.0 – 63.164.191.25563.164.160.0/198,192
63.172.128.0 – 63.172.159.25563.172.128.0/198,192
63.175.32.0 – 63.175.63.25563.175.32.0/198,192
64.32.152.0 – 64.32.159.25564.32.152.0/212,048
64.50.136.0 – 64.50.143.25564.50.136.0/212,048
64.145.128.0 – 64.145.255.25564.145.128.0/1732,768
65.160.160.0 – 65.160.191.25565.160.160.0/198,192
65.161.96.0 – 65.161.127.25565.161.96.0/198,192
65.163.96.0 – 65.163.127.25565.163.96.0/198,192
65.166.32.0 – 65.166.63.25565.166.32.0/198,192
65.166.192.0 – 65.166.223.25565.166.192.0/198,192
65.167.0.0 – 65.167.31.25565.167.0.0/198,192
65.167.160.0 – 65.167.191.25565.167.160.0/198,192
65.170.224.0 – 65.170.255.25565.170.224.0/198,192
65.171.32.0 – 65.171.63.25565.171.32.0/198,192
65.171.192.0 – 65.171.223.25565.171.192.0/198,192
65.173.160.0 – 65.173.191.25565.173.160.0/198,192
65.174.32.0 – 65.174.63.25565.174.32.0/198,192
66.17.72.0 – 66.17.79.25566.17.72.0/212,048
66.200.240.0 – 66.200.255.25566.200.240.0/204,096
74.3.0.0 – 74.3.127.25574.3.0.0/1732,768
81.172.116.0 – 81.172.116.25581.172.116.0/24256
82.21.101.0 – 82.21.101.25582.21.101.0/24256
82.21.134.0 – 82.21.135.25582.21.134.0/23512
82.21.144.0 – 82.21.144.25582.21.144.0/24256
2001:cb0:: – 2001:cb0:ffff:ffff:ffff:ffff:ffff:ffff2001:cb0::/32IPv6
2403:e800:: – 2403:e800:ffff:ffff:ffff:ffff:ffff:ffff2403:e800::/32IPv6
2a02:1620:: – 2a02:1620:ffff:ffff:ffff:ffff:ffff:ffff2a02:1620::/32IPv6
Showing 50 of 257 IPv4 and 3 of 3 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 4 Nov 2026