Summary

ASN	AS2856 British Telecommunications PLC
BGP	81.128.0.0/11
IPs with RDNS	49
Hosted Domains	0
Pingable IPs	146
Router IPs	61


81.144.83.0	—	0
81.144.83.1	—	0
81.144.83.2	—	0
81.144.83.3	ftip007338625.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.4	—	0
81.144.83.5	ftip007338441.acc3.mr.21cn-nte.bt.net	0
81.144.83.6	—	0
81.144.83.7	—	0
81.144.83.8	—	0
81.144.83.9	ftip007339035.acc5.faraday.21cn-nte.bt.net	0
81.144.83.10	—	0
81.144.83.11	—	0
81.144.83.12	—	0
81.144.83.13	—	0
81.144.83.14	—	0
81.144.83.15	—	0
81.144.83.16	—	0
81.144.83.17	—	0
81.144.83.18	—	0
81.144.83.19	—	0
81.144.83.20	—	0
81.144.83.21	ftip007338861.acc4.mr.21cn-nte.bt.net	0
81.144.83.22	—	0
81.144.83.23	—	0
81.144.83.24	—	0
81.144.83.25	ftip007338113.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.26	—	0
81.144.83.27	—	0
81.144.83.28	—	0
81.144.83.29	—	0
81.144.83.30	—	0
81.144.83.31	—	0
81.144.83.32	—	0
81.144.83.33	—	0
81.144.83.34	—	0
81.144.83.35	—	0
81.144.83.36	—	0
81.144.83.37	ftip007339424.acc4.mr.21cn-nte.bt.net	0
81.144.83.38	—	0
81.144.83.39	—	0
81.144.83.40	—	0
81.144.83.41	—	0
81.144.83.42	—	0
81.144.83.43	ftip004657026.acc3.mr.21cn-nte.bt.net	0
81.144.83.44	—	0
81.144.83.45	ftip007665684.acc4.faraday.21cn-nte.bt.net	0
81.144.83.46	—	0
81.144.83.47	—	0
81.144.83.48	—	0
81.144.83.49	ftip004885023.acc3.sf.21cn-nte.bt.net	0
81.144.83.50	—	0
81.144.83.51	—	0
81.144.83.52	—	0
81.144.83.53	ftip007607738.acc3.colindale.21cn-nte.bt.net	0
81.144.83.54	—	0
81.144.83.55	—	0
81.144.83.56	—	0
81.144.83.57	—	0
81.144.83.58	—	0
81.144.83.59	—	0
81.144.83.60	—	0
81.144.83.61	—	0
81.144.83.62	—	0
81.144.83.63	—	0
81.144.83.64	—	0
81.144.83.65	ftip007339820.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.66	—	0
81.144.83.67	—	0
81.144.83.68	—	0
81.144.83.69	ftip007604225.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.70	—	0
81.144.83.71	—	0
81.144.83.72	—	0
81.144.83.73	ftip007340321.acc4.birmingham.21cn-nte.bt.net	0
81.144.83.74	—	0
81.144.83.75	—	0
81.144.83.76	—	0
81.144.83.77	—	0
81.144.83.78	—	0
81.144.83.79	ftip007340338.acc4.birmingham.21cn-nte.bt.net	0
81.144.83.80	—	0
81.144.83.81	ftip003996355.acc4.mr.21cn-nte.bt.net	0
81.144.83.82	—	0
81.144.83.83	—	0
81.144.83.84	—	0
81.144.83.85	ftip004703662-v2-fo.acc2.colindale.21cn-nte.bt.net	0
81.144.83.86	—	0
81.144.83.87	—	0
81.144.83.88	—	0
81.144.83.89	ftip007340659.acc4.sf.21cn-nte.bt.net	0
81.144.83.90	—	0
81.144.83.91	—	0
81.144.83.92	—	0
81.144.83.93	ftip007340642.acc3.sf.21cn-nte.bt.net	0
81.144.83.94	—	0
81.144.83.95	—	0
81.144.83.96	—	0
81.144.83.97	ftip007605680.acc4.faraday.21cn-nte.bt.net	0
81.144.83.98	—	0
81.144.83.99	—	0
81.144.83.100	—	0
81.144.83.101	—	0
81.144.83.102	—	0
81.144.83.103	ftip004629245.acc3.sf.21cn-nte.bt.net	0
81.144.83.104	—	0
81.144.83.105	—	0
81.144.83.106	—	0
81.144.83.107	ftip007340246-ms-fo.acc2.guildford.21cn-nte.bt.net	0
81.144.83.108	—	0
81.144.83.109	—	0
81.144.83.110	—	0
81.144.83.111	—	0
81.144.83.112	—	0
81.144.83.113	ftip007690723.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.114	—	0
81.144.83.115	—	0
81.144.83.116	—	0
81.144.83.117	ftip007607479.acc4.sf.21cn-nte.bt.net	0
81.144.83.118	—	0
81.144.83.119	ftip003345306-ms-fo.acc5.faraday.21cn-nte.bt.net	0
81.144.83.120	—	0
81.144.83.121	ftip003345306-v3-fo.acc2.colindale.21cn-nte.bt.net	0
81.144.83.122	—	0
81.144.83.123	ftip007604485.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.124	—	0
81.144.83.125	ftip007341021-ms-fo.acc5.faraday.21cn-nte.bt.net	0
81.144.83.126	—	0
81.144.83.127	—	0
81.144.83.128	—	0
81.144.83.129	ftip007341021-v1-fo.acc4.mr.21cn-nte.bt.net	0
81.144.83.130	—	0
81.144.83.131	—	0
81.144.83.132	—	0
81.144.83.133	—	0
81.144.83.134	—	0
81.144.83.135	—	0
81.144.83.136	—	0
81.144.83.137	—	0
81.144.83.138	—	0
81.144.83.139	—	0
81.144.83.140	—	0
81.144.83.141	—	0
81.144.83.142	—	0
81.144.83.143	—	0
81.144.83.144	—	0
81.144.83.145	ftip007341625.acc4.faraday.21cn-nte.bt.net	0
81.144.83.146	—	0
81.144.83.147	—	0
81.144.83.148	—	0
81.144.83.149	ftip007340635.acc2.guildford.21cn-nte.bt.net	0
81.144.83.150	—	0
81.144.83.151	—	0
81.144.83.152	—	0
81.144.83.153	ftip007342028.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.154	—	0
81.144.83.155	—	0
81.144.83.156	—	0
81.144.83.157	ftip005478026.acc3.sf.21cn-nte.bt.net	0
81.144.83.158	—	0
81.144.83.159	—	0
81.144.83.160	—	0
81.144.83.161	ftip007342431.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.162	—	0
81.144.83.163	ftip007342226.acc4.mr.21cn-nte.bt.net	0
81.144.83.164	—	0
81.144.83.165	—	0
81.144.83.166	—	0
81.144.83.167	ftip003340080.acc4.faraday.21cn-nte.bt.net	0
81.144.83.168	—	0
81.144.83.169	ftip007342820.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.170	—	0
81.144.83.171	—	0
81.144.83.172	—	0
81.144.83.173	—	0
81.144.83.174	—	0
81.144.83.175	—	0
81.144.83.176	—	0
81.144.83.177	—	0
81.144.83.178	—	0
81.144.83.179	ftip007345043.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.180	—	0
81.144.83.181	—	0
81.144.83.182	—	0
81.144.83.183	—	0
81.144.83.184	—	0
81.144.83.185	—	0
81.144.83.186	—	0
81.144.83.187	—	0
81.144.83.188	—	0
81.144.83.189	—	0
81.144.83.190	—	0
81.144.83.191	ftip007344831.acc4.birmingham.21cn-nte.bt.net	0
81.144.83.192	—	0
81.144.83.193	—	0
81.144.83.194	—	0
81.144.83.195	—	0
81.144.83.196	ftip007604904.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.197	—	0
81.144.83.198	—	0
81.144.83.199	—	0
81.144.83.200	—	0
81.144.83.201	ftip007605444.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.202	—	0
81.144.83.203	ftip007346064.acc4.mr.21cn-nte.bt.net	0
81.144.83.204	—	0
81.144.83.205	—	0
81.144.83.206	—	0
81.144.83.207	—	0
81.144.83.208	—	0
81.144.83.209	—	0
81.144.83.210	—	0
81.144.83.211	—	0
81.144.83.212	—	0
81.144.83.213	ftip007681288.acc2.birmingham.21cn-nte.bt.net	0
81.144.83.214	—	0
81.144.83.215	—	0
81.144.83.216	—	0
81.144.83.217	—	0
81.144.83.218	—	0
81.144.83.219	—	0
81.144.83.220	—	0
81.144.83.221	—	0
81.144.83.222	—	0
81.144.83.223	—	0
81.144.83.224	—	0
81.144.83.225	ftip004015963.acc3.sf.21cn-nte.bt.net	0
81.144.83.226	—	0
81.144.83.227	ftip004245599.acc6.faraday.21cn-nte.bt.net	0
81.144.83.228	—	0
81.144.83.229	—	0
81.144.83.230	—	0
81.144.83.231	—	0
81.144.83.232	—	0
81.144.83.233	—	0
81.144.83.234	—	0
81.144.83.235	ftip007346422.acc3.sf.21cn-nte.bt.net	0
81.144.83.236	—	0
81.144.83.237	—	0
81.144.83.238	—	0
81.144.83.239	—	0
81.144.83.240	—	0
81.144.83.241	ftip007607714-ms-fo.acc6.faraday.21cn-nte.bt.net	0
81.144.83.242	—	0
81.144.83.243	ftip004835042.acc4.mr.21cn-nte.bt.net	0
81.144.83.244	—	0
81.144.83.245	—	0
81.144.83.246	—	0
81.144.83.247	—	0
81.144.83.248	—	0
81.144.83.249	ftip007346101.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.250	—	0
81.144.83.251	ftip007606113.acc3.birmingham.21cn-nte.bt.net	0
81.144.83.252	—	0
81.144.83.253	—	0
81.144.83.254	—	0
81.144.83.255	—	0

Traceroute

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

traceroute -a -n -q1 -f4 81.144.83.64

traceroute to 81.144.83.64 (81.144.83.64): 64 hops max, 52 byte packets

4 [AS2856] 195.99.125.68 63.907 ms

5 [AS2856] 62.6.200.28 31.342 ms

6 [AS2856] 81.144.83.64 34.084 ms

Measurement taken from

IPinfo ProbeNet in Saint Petersburg, RU

On January 18th 2026