Summary

ASN	AS2856 British Telecommunications PLC
BGP	31.121.0.0/16
IPs with RDNS	52
Hosted Domains	0
Pingable IPs	128
Router IPs	62


31.121.228.0	—	0
31.121.228.1	—	0
31.121.228.2	—	0
31.121.228.3	ftip007608100.acc4.faraday.21cn-nte.bt.net	0
31.121.228.4	—	0
31.121.228.5	—	0
31.121.228.6	—	0
31.121.228.7	—	0
31.121.228.8	—	0
31.121.228.9	—	0
31.121.228.10	—	0
31.121.228.11	—	0
31.121.228.12	—	0
31.121.228.13	—	0
31.121.228.14	—	0
31.121.228.15	ftip007391668.acc4.mr.21cn-nte.bt.net	0
31.121.228.16	—	0
31.121.228.17	—	0
31.121.228.18	—	0
31.121.228.19	—	0
31.121.228.20	—	0
31.121.228.21	—	0
31.121.228.22	—	0
31.121.228.23	—	0
31.121.228.24	—	0
31.121.228.25	—	0
31.121.228.26	—	0
31.121.228.27	—	0
31.121.228.28	—	0
31.121.228.29	—	0
31.121.228.30	—	0
31.121.228.31	ftip003624401.acc1.guildford.21cn-nte.bt.net	0
31.121.228.32	—	0
31.121.228.33	ftip007392436.acc3.colindale.ukcore.bt.net	0
31.121.228.34	—	0
31.121.228.35	ftip007392825.acc1.kingston.21cn-nte.bt.net	0
31.121.228.36	—	0
31.121.228.37	—	0
31.121.228.38	—	0
31.121.228.39	ftip007393037.acc2.kingston.21cn-nte.bt.net	0
31.121.228.40	—	0
31.121.228.41	ftip003325605.acc4.mr.21cn-nte.bt.net	0
31.121.228.42	—	0
31.121.228.43	—	0
31.121.228.44	—	0
31.121.228.45	ftip003415467.acc3.colindale.21cn-nte.bt.net	0
31.121.228.46	—	0
31.121.228.47	ftip007393631.acc5.faraday.21cn-nte.bt.net	0
31.121.228.48	—	0
31.121.228.49	—	0
31.121.228.50	—	0
31.121.228.51	—	0
31.121.228.52	—	0
31.121.228.53	ftip003404775-ms-lb.acc3.birmingham.21cn-nte.bt.net	0
31.121.228.54	—	0
31.121.228.55	ftip007393822.acc3.colindale.21cn-nte.bt.net	0
31.121.228.56	—	0
31.121.228.57	—	0
31.121.228.58	—	0
31.121.228.59	ftip005323241.acc4.mr.21cn-nte.bt.net	0
31.121.228.60	—	0
31.121.228.61	—	0
31.121.228.62	—	0
31.121.228.63	—	0
31.121.228.64	—	0
31.121.228.65	—	0
31.121.228.66	—	0
31.121.228.67	ftip007612503.acc2.kingston.21cn-nte.bt.net	0
31.121.228.68	—	0
31.121.228.69	ftip007394089.acc2.guildford.21cn-nte.bt.net	0
31.121.228.70	—	0
31.121.228.71	—	0
31.121.228.72	—	0
31.121.228.73	ftip003623756.acc4.mr.21cn-nte.bt.net	0
31.121.228.74	—	0
31.121.228.75	ftip007394102.acc3.colindale.21cn-nte.bt.net	0
31.121.228.76	—	0
31.121.228.77	ftip007443473.acc4.birmingham.21cn-nte.bt.net	0
31.121.228.78	—	0
31.121.228.79	ftip007394119.acc2.guildford.21cn-nte.bt.net	0
31.121.228.80	—	0
31.121.228.81	—	0
31.121.228.82	—	0
31.121.228.83	ftip003625149.acc1.guildford.21cn-nte.bt.net	0
31.121.228.84	—	0
31.121.228.85	—	0
31.121.228.86	—	0
31.121.228.87	—	0
31.121.228.88	—	0
31.121.228.89	ftip007394041.acc5.faraday.21cn-nte.bt.net	0
31.121.228.90	—	0
31.121.228.91	ftip007394638.acc3.colindale.21cn-nte.bt.net	0
31.121.228.92	—	0
31.121.228.93	—	0
31.121.228.94	—	0
31.121.228.95	—	0
31.121.228.96	—	0
31.121.228.97	—	0
31.121.228.98	—	0
31.121.228.99	—	0
31.121.228.100	—	0
31.121.228.101	—	0
31.121.228.102	—	0
31.121.228.103	ftip007395024.acc3.colindale.21cn-nte.bt.net	0
31.121.228.104	—	0
31.121.228.105	ftip007394652.acc3.colindale.21cn-nte.bt.net	0
31.121.228.106	—	0
31.121.228.107	—	0
31.121.228.108	—	0
31.121.228.109	—	0
31.121.228.110	—	0
31.121.228.111	—	0
31.121.228.112	—	0
31.121.228.113	—	0
31.121.228.114	—	0
31.121.228.115	—	0
31.121.228.116	—	0
31.121.228.117	—	0
31.121.228.118	—	0
31.121.228.119	—	0
31.121.228.120	—	0
31.121.228.121	—	0
31.121.228.122	—	0
31.121.228.123	—	0
31.121.228.124	—	0
31.121.228.125	—	0
31.121.228.126	—	0
31.121.228.127	—	0
31.121.228.128	—	0
31.121.228.129	ftip007482441.acc2.colindale.21cn-nte.bt.net	0
31.121.228.130	—	0
31.121.228.131	—	0
31.121.228.132	—	0
31.121.228.133	ftip007394829.acc4.mr.21cn-nte.bt.net	0
31.121.228.134	—	0
31.121.228.135	ftip007394645.acc6.faraday.21cn-nte.bt.net	0
31.121.228.136	—	0
31.121.228.137	—	0
31.121.228.138	—	0
31.121.228.139	—	0
31.121.228.140	—	0
31.121.228.141	ftip005724475.acc4.faraday.21cn-nte.bt.net	0
31.121.228.142	—	0
31.121.228.143	—	0
31.121.228.144	—	0
31.121.228.145	—	0
31.121.228.146	—	0
31.121.228.147	ftip003236161.acc2.kingston.21cn-nte.bt.net	0
31.121.228.148	—	0
31.121.228.149	ftip007048432.acc2.kingston.21cn-nte.bt.net	0
31.121.228.150	—	0
31.121.228.151	ftip007395826.acc4.mr.21cn-nte.bt.net	0
31.121.228.152	—	0
31.121.228.153	ftip007396021.acc4.mr.21cn-nte.bt.net	0
31.121.228.154	ftip007395222.acc3.colindale.21cn-nte.bt.net	0
31.121.228.155	—	0
31.121.228.156	—	0
31.121.228.157	ftip003610343.acc4.birmingham.21cn-nte.bt.net	0
31.121.228.158	—	0
31.121.228.159	—	0
31.121.228.160	—	0
31.121.228.161	—	0
31.121.228.162	—	0
31.121.228.163	ftip003081099-v4-fo.acc3.colindale.21cn-nte.bt.net	0
31.121.228.164	—	0
31.121.228.165	ftip003388334.acc5.faraday.21cn-nte.bt.net	0
31.121.228.166	—	0
31.121.228.167	ftip007395857.acc3.colindale.21cn-nte.bt.net	0
31.121.228.168	—	0
31.121.228.169	—	0
31.121.228.170	—	0
31.121.228.171	ftip007395635.acc2.kingston.21cn-nte.bt.net	0
31.121.228.172	—	0
31.121.228.173	—	0
31.121.228.174	—	0
31.121.228.175	—	0
31.121.228.176	—	0
31.121.228.177	—	0
31.121.228.178	—	0
31.121.228.179	—	0
31.121.228.180	—	0
31.121.228.181	ftip007395871.acc3.colindale.21cn-nte.bt.net	0
31.121.228.182	—	0
31.121.228.183	ftip007436703.acc3.colindale.21cn-nte.bt.net	0
31.121.228.184	—	0
31.121.228.185	ftip004216957.acc3.colindale.21cn-nte.bt.net	0
31.121.228.186	—	0
31.121.228.187	ftip007396632.acc4.mr.21cn-nte.bt.net	0
31.121.228.188	—	0
31.121.228.189	—	0
31.121.228.190	—	0
31.121.228.191	—	0
31.121.228.192	—	0
31.121.228.193	ftip007396656.acc4.mr.21cn-nte.bt.net	0
31.121.228.194	—	0
31.121.228.195	—	0
31.121.228.196	—	0
31.121.228.197	—	0
31.121.228.198	—	0
31.121.228.199	ftip003671016.acc4.mr.21cn-nte.bt.net	0
31.121.228.200	—	0
31.121.228.201	ftip007397226.acc5.faraday.21cn-nte.bt.net	0
31.121.228.202	—	0
31.121.228.203	—	0
31.121.228.204	—	0
31.121.228.205	ftip007396694.acc2.kingston.21cn-nte.bt.net	0
31.121.228.206	—	0
31.121.228.207	—	0
31.121.228.208	—	0
31.121.228.209	—	0
31.121.228.210	—	0
31.121.228.211	ftip003389430.acc5.faraday.21cn-nte.bt.net	0
31.121.228.212	—	0
31.121.228.213	—	0
31.121.228.214	—	0
31.121.228.215	ftip007397424-ms-bk.acc4.mr.21cn-nte.bt.net	0
31.121.228.216	—	0
31.121.228.217	ftip005095230.acc4.mr.21cn-nte.bt.net	0
31.121.228.218	—	0
31.121.228.219	—	0
31.121.228.220	—	0
31.121.228.221	ftip007397424-v1-bk.acc3.colindale.21cn-nte.bt.net	0
31.121.228.222	—	0
31.121.228.223	ftip004485223.acc2.kingston.21cn-nte.bt.net	0
31.121.228.224	—	0
31.121.228.225	—	0
31.121.228.226	—	0
31.121.228.227	—	0
31.121.228.228	—	0
31.121.228.229	—	0
31.121.228.230	—	0
31.121.228.231	—	0
31.121.228.232	—	0
31.121.228.233	—	0
31.121.228.234	—	0
31.121.228.235	—	0
31.121.228.236	—	0
31.121.228.237	—	0
31.121.228.238	—	0
31.121.228.239	—	0
31.121.228.240	—	0
31.121.228.241	—	0
31.121.228.242	—	0
31.121.228.243	ftip005072620.acc3.sf.21cn-nte.bt.net	0
31.121.228.244	—	0
31.121.228.245	—	0
31.121.228.246	—	0
31.121.228.247	ftip003335758.acc3.colindale.21cn-nte.bt.net	0
31.121.228.248	—	0
31.121.228.249	—	0
31.121.228.250	—	0
31.121.228.251	—	0
31.121.228.252	—	0
31.121.228.253	—	0
31.121.228.254	—	0
31.121.228.255	—	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 31.121.228.46

traceroute to 31.121.228.46 (31.121.228.46): 64 hops max, 52 byte packets

5 [AS2856] 31.121.228.46 151.034 ms

Measurement taken from

IPinfo ProbeNet in San Pedro, CR

On December 29th 2025