Summary

ASN	AS2856 British Telecommunications PLC
BGP	31.121.0.0/16
IPs with RDNS	62
Hosted Domains	0
Pingable IPs	126
Router IPs	66


31.121.235.0	—	0
31.121.235.1	—	0
31.121.235.2	—	0
31.121.235.3	ftip007426261.acc2.colindale.21cn-nte.bt.net	0
31.121.235.4	—	0
31.121.235.5	—	0
31.121.235.6	—	0
31.121.235.7	—	0
31.121.235.8	—	0
31.121.235.9	—	0
31.121.235.10	—	0
31.121.235.11	—	0
31.121.235.12	—	0
31.121.235.13	—	0
31.121.235.14	—	0
31.121.235.15	ftip007425448.acc2.colindale.21cn-nte.bt.net	0
31.121.235.16	—	0
31.121.235.17	—	0
31.121.235.18	—	0
31.121.235.19	ftip007425455.acc2.colindale.21cn-nte.bt.net	0
31.121.235.20	—	0
31.121.235.21	ftip002852683.acc4.mr.21cn-nte.bt.net	0
31.121.235.22	—	0
31.121.235.23	ftip007614293.acc2.guildford.21cn-nte.bt.net	0
31.121.235.24	—	0
31.121.235.25	ftip007426230.acc4.mr.21cn-nte.bt.net	0
31.121.235.26	—	0
31.121.235.27	—	0
31.121.235.28	—	0
31.121.235.29	—	0
31.121.235.30	—	0
31.121.235.31	ftip005307425.acc5.faraday.21cn-nte.bt.net	0
31.121.235.32	—	0
31.121.235.33	—	0
31.121.235.34	—	0
31.121.235.35	ftip007426254.acc4.mr.21cn-nte.bt.net	0
31.121.235.36	—	0
31.121.235.37	—	0
31.121.235.38	—	0
31.121.235.39	—	0
31.121.235.40	—	0
31.121.235.41	—	0
31.121.235.42	—	0
31.121.235.43	ftip007426315.acc4.mr.21cn-nte.bt.net	0
31.121.235.44	—	0
31.121.235.45	ftip007426322.acc4.sf.21cn-nte.bt.net	0
31.121.235.46	—	0
31.121.235.47	ftip007426308.acc4.mr.21cn-nte.bt.net	0
31.121.235.48	—	0
31.121.235.49	—	0
31.121.235.50	—	0
31.121.235.51	—	0
31.121.235.52	—	0
31.121.235.53	—	0
31.121.235.54	—	0
31.121.235.55	—	0
31.121.235.56	—	0
31.121.235.57	—	0
31.121.235.58	—	0
31.121.235.59	ftip003614938.acc2.guildford.21cn-nte.bt.net	0
31.121.235.60	—	0
31.121.235.61	ftip007426667.acc4.mr.21cn-nte.bt.net	0
31.121.235.62	—	0
31.121.235.63	—	0
31.121.235.64	—	0
31.121.235.65	ftip007425233.acc4.mr.21cn-nte.bt.net	0
31.121.235.66	—	0
31.121.235.67	—	0
31.121.235.68	—	0
31.121.235.69	—	0
31.121.235.70	—	0
31.121.235.71	ftip004710639.acc4.birmingham.21cn-nte.bt.net	0
31.121.235.72	—	0
31.121.235.73	—	0
31.121.235.74	—	0
31.121.235.75	—	0
31.121.235.76	—	0
31.121.235.77	—	0
31.121.235.78	—	0
31.121.235.79	—	0
31.121.235.80	—	0
31.121.235.81	—	0
31.121.235.82	—	0
31.121.235.83	—	0
31.121.235.84	—	0
31.121.235.85	—	0
31.121.235.86	—	0
31.121.235.87	ftip007426032.acc3.colindale.21cn-nte.bt.net	0
31.121.235.88	—	0
31.121.235.89	ftip004220367.acc6.faraday.21cn-nte.bt.net	0
31.121.235.90	—	0
31.121.235.91	ftip007427718.acc3.faraday.21cn-nte.bt.net	0
31.121.235.92	—	0
31.121.235.93	—	0
31.121.235.94	—	0
31.121.235.95	—	0
31.121.235.96	—	0
31.121.235.97	—	0
31.121.235.98	—	0
31.121.235.99	—	0
31.121.235.100	—	0
31.121.235.101	—	0
31.121.235.102	—	0
31.121.235.103	—	0
31.121.235.104	—	0
31.121.235.105	ftip006713027-v1-fo.acc3.birmingham.21cn-nte.bt.net	0
31.121.235.106	—	0
31.121.235.107	ftip003392805.acc3.mr.21cn-nte.bt.net	0
31.121.235.108	—	0
31.121.235.109	ftip007427626.acc4.mr.21cn-nte.bt.net	0
31.121.235.110	—	0
31.121.235.111	—	0
31.121.235.112	—	0
31.121.235.113	—	0
31.121.235.114	—	0
31.121.235.115	ftip007427428.acc4.mr.21cn-nte.bt.net	0
31.121.235.116	—	0
31.121.235.117	ftip007427701.acc4.mr.21cn-nte.bt.net	0
31.121.235.118	—	0
31.121.235.119	ftip007425240.acc4.mr.21cn-nte.bt.net	0
31.121.235.120	—	0
31.121.235.121	ftip004985037.acc2.guildford.21cn-nte.bt.net	0
31.121.235.122	—	0
31.121.235.123	—	0
31.121.235.124	—	0
31.121.235.125	ftip003929193.acc3.colindale.21cn-nte.bt.net	0
31.121.235.126	—	0
31.121.235.127	ftip007427442.acc4.mr.21cn-nte.bt.net	0
31.121.235.128	—	0
31.121.235.129	ftip005190225.acc3.colindale.21cn-nte.bt.net	0
31.121.235.130	—	0
31.121.235.131	ftip006690854.acc2.kingston.21cn-nte.bt.net	0
31.121.235.132	—	0
31.121.235.133	—	0
31.121.235.134	—	0
31.121.235.135	—	0
31.121.235.136	—	0
31.121.235.137	ftip007428463-ms-fo.acc1.guildford.21cn-nte.bt.net	0
31.121.235.138	—	0
31.121.235.139	ftip007428463-v1-fo.acc2.kingston.21cn-nte.bt.net	0
31.121.235.140	—	0
31.121.235.141	—	0
31.121.235.142	—	0
31.121.235.143	—	0
31.121.235.144	—	0
31.121.235.145	ftip007427633.acc2.colindale.21cn-nte.bt.net	0
31.121.235.146	—	0
31.121.235.147	—	0
31.121.235.148	—	0
31.121.235.149	—	0
31.121.235.150	—	0
31.121.235.151	ftip007426421-v1-lb.acc3.colindale.21cn-nte.bt.net	0
31.121.235.152	—	0
31.121.235.153	—	0
31.121.235.154	—	0
31.121.235.155	ftip007613944.acc3.faraday.21cn-nte.bt.net	0
31.121.235.156	—	0
31.121.235.157	ftip007426421-ms-lb.acc4.mr.21cn-nte.bt.net	0
31.121.235.158	—	0
31.121.235.159	—	0
31.121.235.160	—	0
31.121.235.161	—	0
31.121.235.162	—	0
31.121.235.163	ftip004073468.acc3.colindale.21cn-nte.bt.net	0
31.121.235.164	—	0
31.121.235.165	ftip004149767.acc3.birmingham.21cn-nte.bt.net	0
31.121.235.166	—	0
31.121.235.167	—	0
31.121.235.168	—	0
31.121.235.169	ftip007428845-ms-fo.acc4.mr.21cn-nte.bt.net	0
31.121.235.170	—	0
31.121.235.171	—	0
31.121.235.172	—	0
31.121.235.173	—	0
31.121.235.174	—	0
31.121.235.175	ftip007428845-v1-fo.acc4.sf.21cn-nte.bt.net	0
31.121.235.176	—	0
31.121.235.177	—	0
31.121.235.178	—	0
31.121.235.179	—	0
31.121.235.180	—	0
31.121.235.181	ftip007485039.acc2.kingston.21cn-nte.bt.net	0
31.121.235.182	—	0
31.121.235.183	ftip007427640.acc5.faraday.21cn-nte.bt.net	0
31.121.235.184	—	0
31.121.235.185	ftip007429026.acc4.mr.21cn-nte.bt.net	0
31.121.235.186	—	0
31.121.235.187	ftip007427435.acc5.faraday.21cn-nte.bt.net	0
31.121.235.188	—	0
31.121.235.189	ftip007427459.acc5.faraday.21cn-nte.bt.net	0
31.121.235.190	—	0
31.121.235.191	ftip007429439.acc3.faraday.21cn-nte.bt.net	0
31.121.235.192	—	0
31.121.235.193	—	0
31.121.235.194	—	0
31.121.235.195	—	0
31.121.235.196	—	0
31.121.235.197	—	0
31.121.235.198	—	0
31.121.235.199	ftip007428630.acc6.faraday.21cn-nte.bt.net	0
31.121.235.200	—	0
31.121.235.201	ftip007428821.acc4.mr.21cn-nte.bt.net	0
31.121.235.202	—	0
31.121.235.203	ftip007428838.acc3.colindale.21cn-nte.bt.net	0
31.121.235.204	—	0
31.121.235.205	—	0
31.121.235.206	—	0
31.121.235.207	ftip004934271.acc4.mr.21cn-nte.bt.net	0
31.121.235.208	—	0
31.121.235.209	ftip007428937-ms-lb.acc4.mr.21cn-nte.bt.net	0
31.121.235.210	—	0
31.121.235.211	ftip007428647.acc4.birmingham.21cn-nte.bt.net	0
31.121.235.212	—	0
31.121.235.213	—	0
31.121.235.214	—	0
31.121.235.215	ftip007428937-v1-lb.acc4.sf.21cn-nte.bt.net	0
31.121.235.216	—	0
31.121.235.217	ftip007428876.acc4.birmingham.21cn-nte.bt.net	0
31.121.235.218	—	0
31.121.235.219	—	0
31.121.235.220	—	0
31.121.235.221	—	0
31.121.235.222	—	0
31.121.235.223	—	0
31.121.235.224	—	0
31.121.235.225	ftip007699085.acc3.birmingham.21cn-nte.bt.net	0
31.121.235.226	—	0
31.121.235.227	—	0
31.121.235.228	—	0
31.121.235.229	—	0
31.121.235.230	—	0
31.121.235.231	—	0
31.121.235.232	—	0
31.121.235.233	—	0
31.121.235.234	—	0
31.121.235.235	ftip005248230.acc4.mr.21cn-nte.bt.net	0
31.121.235.236	—	0
31.121.235.237	ftip007427824.acc4.mr.21cn-nte.bt.net	0
31.121.235.238	—	0
31.121.235.239	ftip007428906.acc4.mr.21cn-nte.bt.net	0
31.121.235.240	—	0
31.121.235.241	ftip007428029.acc4.mr.21cn-nte.bt.net	0
31.121.235.242	—	0
31.121.235.243	ftip007690709.acc2.colindale.21cn-nte.bt.net	0
31.121.235.244	—	0
31.121.235.245	ftip007428869.acc4.sf.21cn-nte.bt.net	0
31.121.235.246	—	0
31.121.235.247	ftip005347421.acc3.birmingham.21cn-nte.bt.net	0
31.121.235.248	—	0
31.121.235.249	—	0
31.121.235.250	—	0
31.121.235.251	ftip004709022.acc3.birmingham.21cn-nte.bt.net	0
31.121.235.252	—	0
31.121.235.253	—	0
31.121.235.254	—	0
31.121.235.255	—	0

Traceroute

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

traceroute -a -n -q1 -f5 31.121.235.160

traceroute to 31.121.235.160 (31.121.235.160): 64 hops max, 52 byte packets

5 [AS5400] 166.49.209.195 148.208 ms

6 *

7 [AS2856] 31.121.235.160 158.568 ms

Measurement taken from

IPinfo ProbeNet in Bogota, CO

On December 6th 2025