Summary

ASN	AS2856 British Telecommunications PLC
BGP	31.121.0.0/16
IPs with RDNS	50
Hosted Domains	0
Pingable IPs	128
Router IPs	59


31.121.248.0	—	0
31.121.248.1	—	0
31.121.248.2	—	0
31.121.248.3	ftip007483455.acc3.colindale.21cn-nte.bt.net	0
31.121.248.4	—	0
31.121.248.5	—	0
31.121.248.6	—	0
31.121.248.7	—	0
31.121.248.8	—	0
31.121.248.9	—	0
31.121.248.10	—	0
31.121.248.11	—	0
31.121.248.12	—	0
31.121.248.13	—	0
31.121.248.14	—	0
31.121.248.15	—	0
31.121.248.16	—	0
31.121.248.17	—	0
31.121.248.18	—	0
31.121.248.19	—	0
31.121.248.20	—	0
31.121.248.21	—	0
31.121.248.22	—	0
31.121.248.23	—	0
31.121.248.24	—	0
31.121.248.25	—	0
31.121.248.26	—	0
31.121.248.27	ftip007482458.acc2.colindale.21cn-nte.bt.net	0
31.121.248.28	—	0
31.121.248.29	ftip003371749.acc1.colindale.21cn-nte.bt.net	0
31.121.248.30	—	0
31.121.248.31	—	0
31.121.248.32	—	0
31.121.248.33	ftip007484247.acc3.colindale.21cn-nte.bt.net	0
31.121.248.34	—	0
31.121.248.35	ftip007484872-ms-lb.acc2.kingston.21cn-nte.bt.net	0
31.121.248.36	—	0
31.121.248.37	ftip007483875.acc2.colindale.21cn-nte.bt.net	0
31.121.248.38	—	0
31.121.248.39	ftip004550020.acc3.sf.21cn-nte.bt.net	0
31.121.248.40	—	0
31.121.248.41	ftip007484421.acc4.mr.21cn-nte.bt.net	0
31.121.248.42	—	0
31.121.248.43	ftip007484872-v1-lb.acc4.mr.21cn-nte.bt.net	0
31.121.248.44	—	0
31.121.248.45	ftip007483868.acc3.colindale.21cn-nte.bt.net	0
31.121.248.46	—	0
31.121.248.47	ftip007716294-v1-lb.acc2.faraday.21cn-nte.bt.net	0
31.121.248.48	—	0
31.121.248.49	—	0
31.121.248.50	—	0
31.121.248.51	ftip007483448.acc3.colindale.21cn-nte.bt.net	0
31.121.248.52	—	0
31.121.248.53	ftip007483028.acc1.kingston.21cn-nte.bt.net	0
31.121.248.54	—	0
31.121.248.55	ftip007483479.acc3.colindale.21cn-nte.bt.net	0
31.121.248.56	—	0
31.121.248.57	ftip004656050.acc3.sf.21cn-nte.bt.net	0
31.121.248.58	—	0
31.121.248.59	—	0
31.121.248.60	—	0
31.121.248.61	—	0
31.121.248.62	—	0
31.121.248.63	—	0
31.121.248.64	—	0
31.121.248.65	—	0
31.121.248.66	—	0
31.121.248.67	—	0
31.121.248.68	—	0
31.121.248.69	—	0
31.121.248.70	—	0
31.121.248.71	—	0
31.121.248.72	—	0
31.121.248.73	—	0
31.121.248.74	—	0
31.121.248.75	—	0
31.121.248.76	—	0
31.121.248.77	—	0
31.121.248.78	—	0
31.121.248.79	—	0
31.121.248.80	—	0
31.121.248.81	—	0
31.121.248.82	—	0
31.121.248.83	—	0
31.121.248.84	—	0
31.121.248.85	—	0
31.121.248.86	—	0
31.121.248.87	—	0
31.121.248.88	—	0
31.121.248.89	—	0
31.121.248.90	—	0
31.121.248.91	—	0
31.121.248.92	—	0
31.121.248.93	—	0
31.121.248.94	—	0
31.121.248.95	—	0
31.121.248.96	—	0
31.121.248.97	ftip007485435.acc2.guildford.21cn-nte.bt.net	0
31.121.248.98	—	0
31.121.248.99	—	0
31.121.248.100	—	0
31.121.248.101	—	0
31.121.248.102	—	0
31.121.248.103	ftip004993452.acc2.colindale.21cn-nte.bt.net	0
31.121.248.104	—	0
31.121.248.105	ftip007622687.acc5.faraday.21cn-nte.bt.net	0
31.121.248.106	—	0
31.121.248.107	ftip007625107.acc2.colindale.21cn-nte.bt.net	0
31.121.248.108	—	0
31.121.248.109	—	0
31.121.248.110	—	0
31.121.248.111	—	0
31.121.248.112	—	0
31.121.248.113	—	0
31.121.248.114	—	0
31.121.248.115	ftip007482038.acc2.kingston.21cn-nte.bt.net	0
31.121.248.116	—	0
31.121.248.117	—	0
31.121.248.118	—	0
31.121.248.119	—	0
31.121.248.120	—	0
31.121.248.121	ftip007482823.acc2.kingston.21cn-nte.bt.net	0
31.121.248.122	—	0
31.121.248.123	ftip005432639.acc2.guildford.21cn-nte.bt.net	0
31.121.248.124	—	0
31.121.248.125	ftip007484650.acc4.birmingham.21cn-nte.bt.net	0
31.121.248.126	—	0
31.121.248.127	—	0
31.121.248.128	—	0
31.121.248.129	ftip007483837.acc2.kingston.21cn-nte.bt.net	0
31.121.248.130	—	0
31.121.248.131	—	0
31.121.248.132	—	0
31.121.248.133	—	0
31.121.248.134	—	0
31.121.248.135	ftip007482229.acc2.kingston.21cn-nte.bt.net	0
31.121.248.136	—	0
31.121.248.137	—	0
31.121.248.138	—	0
31.121.248.139	ftip007483431.acc2.kingston.21cn-nte.bt.net	0
31.121.248.140	—	0
31.121.248.141	ftip007483226.acc2.kingston.21cn-nte.bt.net	0
31.121.248.142	—	0
31.121.248.143	ftip007486630.acc2.kingston.21cn-nte.bt.net	0
31.121.248.144	—	0
31.121.248.145	ftip007484025.acc2.kingston.21cn-nte.bt.net	0
31.121.248.146	—	0
31.121.248.147	ftip007482021.acc2.kingston.21cn-nte.bt.net	0
31.121.248.148	—	0
31.121.248.149	ftip007625374.acc3.birmingham.21cn-nte.bt.net	0
31.121.248.150	—	0
31.121.248.151	ftip007484230.acc2.kingston.21cn-nte.bt.net	0
31.121.248.152	—	0
31.121.248.153	—	0
31.121.248.154	—	0
31.121.248.155	—	0
31.121.248.156	—	0
31.121.248.157	ftip007486234.acc3.colindale.21cn-nte.bt.net	0
31.121.248.158	—	0
31.121.248.159	—	0
31.121.248.160	—	0
31.121.248.161	ftip007486227.acc3.colindale.21cn-nte.bt.net	0
31.121.248.162	—	0
31.121.248.163	—	0
31.121.248.164	—	0
31.121.248.165	—	0
31.121.248.166	—	0
31.121.248.167	ftip005185023.acc4.birmingham.21cn-nte.bt.net	0
31.121.248.168	—	0
31.121.248.169	ftip003421758.acc2.faraday.21cn-nte.bt.net	0
31.121.248.170	—	0
31.121.248.171	—	0
31.121.248.172	—	0
31.121.248.173	ftip005828425.acc2.guildford.21cn-nte.bt.net	0
31.121.248.174	—	0
31.121.248.175	—	0
31.121.248.176	—	0
31.121.248.177	—	0
31.121.248.178	—	0
31.121.248.179	—	0
31.121.248.180	—	0
31.121.248.181	ftip007485046.acc1.kingston.21cn-nte.bt.net	0
31.121.248.182	—	0
31.121.248.183	—	0
31.121.248.184	—	0
31.121.248.185	ftip007486623.acc4.mr.21cn-nte.bt.net	0
31.121.248.186	—	0
31.121.248.187	ftip007485824.acc3.colindale.21cn-nte.bt.net	0
31.121.248.188	—	0
31.121.248.189	—	0
31.121.248.190	—	0
31.121.248.191	—	0
31.121.248.192	—	0
31.121.248.193	—	0
31.121.248.194	—	0
31.121.248.195	ftip007484667.acc3.colindale.21cn-nte.bt.net	0
31.121.248.196	—	0
31.121.248.197	ftip007488023.acc4.birmingham.21cn-nte.bt.net	0
31.121.248.198	—	0
31.121.248.199	ftip007486876-ms-fo.acc4.mr.21cn-nte.bt.net	0
31.121.248.200	—	0
31.121.248.201	ftip007486876-v1-fo.acc4.sf.21cn-nte.bt.net	0
31.121.248.202	—	0
31.121.248.203	ftip003897768.acc3.sf.21cn-nte.bt.net	0
31.121.248.204	—	0
31.121.248.205	ftip007624117-ms-lb.acc6.faraday.21cn-nte.bt.net	0
31.121.248.206	—	0
31.121.248.207	ftip007484865.acc6.faraday.21cn-nte.bt.net	0
31.121.248.208	—	0
31.121.248.209	—	0
31.121.248.210	—	0
31.121.248.211	—	0
31.121.248.212	—	0
31.121.248.213	ftip003367636.acc2.guildford.21cn-nte.bt.net	0
31.121.248.214	—	0
31.121.248.215	—	0
31.121.248.216	—	0
31.121.248.217	—	0
31.121.248.218	—	0
31.121.248.219	—	0
31.121.248.220	—	0
31.121.248.221	—	0
31.121.248.222	—	0
31.121.248.223	—	0
31.121.248.224	—	0
31.121.248.225	—	0
31.121.248.226	—	0
31.121.248.227	—	0
31.121.248.228	—	0
31.121.248.229	ftip007624117-v1-lb.acc3.colindale.21cn-nte.bt.net	0
31.121.248.230	—	0
31.121.248.231	—	0
31.121.248.232	—	0
31.121.248.233	—	0
31.121.248.234	—	0
31.121.248.235	—	0
31.121.248.236	—	0
31.121.248.237	—	0
31.121.248.238	—	0
31.121.248.239	ftip003447161-ms-fo.acc3.mr.21cn-nte.bt.net	0
31.121.248.240	—	0
31.121.248.241	—	0
31.121.248.242	—	0
31.121.248.243	—	0
31.121.248.244	—	0
31.121.248.245	—	0
31.121.248.246	—	0
31.121.248.247	—	0
31.121.248.248	—	0
31.121.248.249	—	0
31.121.248.250	—	0
31.121.248.251	—	0
31.121.248.252	—	0
31.121.248.253	—	0
31.121.248.254	—	0
31.121.248.255	—	0

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 31.121.248.160

traceroute to 31.121.248.160 (31.121.248.160): 64 hops max, 52 byte packets

3 [AS2856] 194.74.16.166 134.987 ms

4 [AS2856] 31.121.248.160 140.345 ms

Measurement taken from

IPinfo ProbeNet in Salt Lake City, US

On January 30th 2026