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AS3300

AS3300 is British Telecommunications Limited.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (4 Nov 2026)

Short answer

AS3300 belongs to British Telecommunications Limited. DB-IP Lite attributes 513,280 IPv4 addresses in 32 ranges and 9 IPv6 ranges to it, 54% of the IPv4 space in United States. The number is registered with RIPE NCC in United Kingdom on 28 Oct 1994.

Facts for AS3300
Operator (DB-IP)British Telecommunications Limited
IPv4 addresses513,280
IPv4 ranges32
IPv6 ranges9
RegistryRIPE NCC
Registered28 Oct 1994
Registry countryUnited Kingdom (GB)

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)

British Telecommunications 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 9 IPv6 ranges for AS3300, so customers can get IPv6 addresses, which databases place separately from IPv4.

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

US54%
CA17%
SG4%
JP3%
HK2%
DE2%
GB1%
BR1%

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

IP ranges

RangeAs CIDRAddresses
61.14.0.0 – 61.14.63.25561.14.0.0/1816,384
63.250.128.0 – 63.250.191.25563.250.128.0/1816,384
72.29.128.0 – 72.29.143.25572.29.128.0/204,096
136.238.168.0 – 136.238.168.255136.238.168.0/24256
136.238.185.0 – 136.238.185.255136.238.185.0/24256
136.238.187.0 – 136.238.187.255136.238.187.0/24256
136.238.229.0 – 136.238.229.255136.238.229.0/24256
136.238.232.0 – 136.238.232.255136.238.232.0/24256
136.238.238.0 – 136.238.241.255136.238.238.0/23, 136.238.240.0/231,024
136.238.243.0 – 136.238.243.255136.238.243.0/24256
185.249.5.0 – 185.249.6.255185.249.5.0/24, 185.249.6.0/24512
192.92.18.0 – 192.92.63.255192.92.18.0/23, 192.92.20.0/22 …11,776
192.92.80.0 – 192.92.82.255192.92.80.0/23, 192.92.82.0/24768
192.157.130.0 – 192.157.161.255192.157.130.0/23, 192.157.132.0/22 …8,192
192.237.64.0 – 192.237.127.255192.237.64.0/1816,384
194.33.52.0 – 194.33.52.255194.33.52.0/24256
195.206.69.0 – 195.206.70.255195.206.69.0/24, 195.206.70.0/24512
198.137.75.0 – 198.137.75.255198.137.75.0/24256
198.178.237.0 – 198.178.237.255198.178.237.0/24256
198.178.239.0 – 198.178.239.255198.178.239.0/24256
198.207.64.0 – 198.207.127.255198.207.64.0/1816,384
199.6.64.0 – 199.6.127.255199.6.64.0/1816,384
203.187.128.0 – 203.187.159.255203.187.128.0/198,192
204.52.187.0 – 204.52.187.255204.52.187.0/24256
204.79.84.0 – 204.79.84.255204.79.84.0/24256
204.140.64.0 – 204.140.127.255204.140.64.0/1816,384
204.231.0.0 – 204.231.191.255204.231.0.0/17, 204.231.128.0/1849,152
205.248.0.0 – 205.248.255.255205.248.0.0/1665,536
206.182.0.0 – 206.182.255.255206.182.0.0/1665,536
207.117.0.0 – 207.117.255.255207.117.0.0/1665,536
207.209.0.0 – 207.209.255.255207.209.0.0/1665,536
209.28.0.0 – 209.28.255.255209.28.0.0/1665,536
2402:fb00:: – 2402:fb00:7fff:ffff:ffff:ffff:ffff:ffff2402:fb00::/33IPv6
2402:fb00:8200:: – 2402:fb00:83ff:ffff:ffff:ffff:ffff:ffff2402:fb00:8200::/39IPv6
2402:fb00:8600:: – 2402:fb00:87ff:ffff:ffff:ffff:ffff:ffff2402:fb00:8600::/39IPv6
2402:fb00:8900:: – 2402:fb00:bfff:ffff:ffff:ffff:ffff:ffff2402:fb00:8900::/40IPv6
2402:fb00:c400:: – 2402:fb00:ffff:ffff:ffff:ffff:ffff:ffff2402:fb00:c400::/38IPv6
2606:f100:: – 2606:f100:cfff:ffff:ffff:ffff:ffff:ffff2606:f100::/33IPv6
2606:f100:d200:: – 2606:f100:d3ff:ffff:ffff:ffff:ffff:ffff2606:f100:d200::/39IPv6
2606:f100:e000:: – 2606:f100:e3ff:ffff:ffff:ffff:ffff:ffff2606:f100:e000::/38IPv6
2606:f100:e600:: – 2606:f100:ffff:ffff:ffff:ffff:ffff:ffff2606:f100:e600::/39IPv6
Showing 32 of 32 IPv4 and 9 of 9 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 5 Nov 2026