Sign inMonitor a domain
AS6871

AS6871 is British Telecommunications PLC.

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

Short answer

AS6871 belongs to British Telecommunications PLC. DB-IP Lite attributes 2,097,664 IPv4 addresses in 47 ranges and 2 IPv6 ranges to it, all or nearly all of the IPv4 space in United Kingdom. The number is registered with RIPE NCC in United Kingdom on 13 Dec 1996.

Facts for AS6871
Operator (DB-IP)British Telecommunications PLC
IPv4 addresses2,097,664
IPv4 ranges47
IPv6 ranges2
RegistryRIPE NCC
Registered13 Dec 1996
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 PLC 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 2 IPv6 ranges for AS6871, so customers can get IPv6 addresses, which databases place separately from IPv4.

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

GB100%
DE0.01%

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

IP ranges

RangeAs CIDRAddresses
31.108.0.0 – 31.111.255.25531.108.0.0/14262,144
31.125.0.0 – 31.125.255.25531.125.0.0/1665,536
31.185.32.0 – 31.185.63.25531.185.32.0/198,192
31.185.128.0 – 31.185.255.25531.185.128.0/1732,768
37.152.192.0 – 37.152.255.25537.152.192.0/1816,384
46.208.0.0 – 46.208.255.25546.208.0.0/1665,536
51.6.0.0 – 51.7.255.25551.6.0.0/15131,072
51.9.0.0 – 51.9.255.25551.9.0.0/1665,536
80.189.0.0 – 80.189.255.25580.189.0.0/1665,536
80.229.0.0 – 80.229.255.25580.229.0.0/1665,536
81.174.128.0 – 81.174.255.25581.174.128.0/1732,768
83.216.128.0 – 83.216.159.25583.216.128.0/198,192
84.51.128.0 – 84.51.191.25584.51.128.0/1816,384
84.92.0.0 – 84.93.255.25584.92.0.0/15131,072
87.112.0.0 – 87.115.255.25587.112.0.0/14262,144
91.125.0.0 – 91.125.255.25591.125.0.0/1665,536
143.159.0.0 – 143.159.255.255143.159.0.0/1665,536
146.66.32.0 – 146.66.63.255146.66.32.0/198,192
146.90.0.0 – 146.90.255.255146.90.0.0/1665,536
146.198.0.0 – 146.200.255.255146.198.0.0/15, 146.200.0.0/16196,608
147.147.0.0 – 147.147.255.255147.147.0.0/1665,536
150.143.0.0 – 150.143.255.255150.143.0.0/1665,536
194.75.0.0 – 194.75.31.255194.75.0.0/198,192
194.75.80.0 – 194.75.95.255194.75.80.0/204,096
194.75.220.0 – 194.75.223.255194.75.220.0/221,024
195.99.8.0 – 195.99.15.255195.99.8.0/212,048
195.99.32.0 – 195.99.63.255195.99.32.0/198,192
195.99.88.0 – 195.99.95.255195.99.88.0/212,048
195.99.224.0 – 195.99.239.255195.99.224.0/204,096
195.166.128.0 – 195.166.159.255195.166.128.0/198,192
195.213.0.0 – 195.213.255.255195.213.0.0/1665,536
209.93.0.0 – 209.93.255.255209.93.0.0/1665,536
212.56.64.0 – 212.56.127.255212.56.64.0/1816,384
212.140.0.0 – 212.140.55.255212.140.0.0/19, 212.140.32.0/20 …14,336
212.159.0.0 – 212.159.127.255212.159.0.0/1732,768
213.31.0.0 – 213.31.255.255213.31.0.0/1665,536
213.162.96.0 – 213.162.127.255213.162.96.0/198,192
217.32.30.0 – 217.32.47.255217.32.30.0/23, 217.32.32.0/204,608
217.32.112.0 – 217.32.115.255217.32.112.0/221,024
217.32.148.0 – 217.32.163.255217.32.148.0/22, 217.32.152.0/21 …4,096
217.32.176.0 – 217.32.179.255217.32.176.0/221,024
217.39.16.0 – 217.39.31.255217.39.16.0/204,096
217.39.112.0 – 217.39.127.255217.39.112.0/204,096
217.45.24.0 – 217.45.31.255217.45.24.0/212,048
217.45.96.0 – 217.45.111.255217.45.96.0/204,096
217.46.24.0 – 217.46.27.255217.46.24.0/221,024
217.46.128.0 – 217.46.143.255217.46.128.0/204,096
2a02:16c8:: – 2a02:16c8:ffff:ffff:ffff:ffff:ffff:ffff2a02:16c8::/32IPv6
2a06:7200:: – 2a06:7207:ffff:ffff:ffff:ffff:ffff:ffff2a06:7200::/29IPv6
Showing 47 of 47 IPv4 and 2 of 2 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