Summary

ASN	AS2856 British Telecommunications PLC
BGP	81.128.0.0/11
IPs with RDNS	45
Hosted Domains	0
Pingable IPs	0
Router IPs	0


81.144.13.0	—	0
81.144.13.1	—	0
81.144.13.2	—	0
81.144.13.3	—	0
81.144.13.4	—	0
81.144.13.5	—	0
81.144.13.6	—	0
81.144.13.7	—	0
81.144.13.8	—	0
81.144.13.9	—	0
81.144.13.10	—	0
81.144.13.11	—	0
81.144.13.12	—	0
81.144.13.13	—	0
81.144.13.14	rok-prop-plymou-s0036.ftip002605081.vpn-nte.bt.net	0
81.144.13.15	—	0
81.144.13.16	—	0
81.144.13.17	—	0
81.144.13.18	—	0
81.144.13.19	—	0
81.144.13.20	—	0
81.144.13.21	—	0
81.144.13.22	—	0
81.144.13.23	—	0
81.144.13.24	—	0
81.144.13.25	—	0
81.144.13.26	—	0
81.144.13.27	—	0
81.144.13.28	—	0
81.144.13.29	—	0
81.144.13.30	tis-thal-clifto-s0042.ftip002723846.vpn-nte.bt.net	0
81.144.13.31	—	0
81.144.13.32	—	0
81.144.13.33	ashtead-keybridgesec-s1-1.ftip002688633.vpn-nte.bt.net	0
81.144.13.34	—	0
81.144.13.35	—	0
81.144.13.36	—	0
81.144.13.37	parag-b-wembly-s0001-1.ftip002737010.vpn-nte.bt.net	0
81.144.13.38	—	0
81.144.13.39	parag-b-basild-s0003.ftip002737010.vpn-nte.bt.net	0
81.144.13.40	—	0
81.144.13.41	pan-fish-cairnd-s0001-1.ftip002735825.vpn-nte.bt.net	0
81.144.13.42	—	0
81.144.13.43	—	0
81.144.13.44	—	0
81.144.13.45	—	0
81.144.13.46	—	0
81.144.13.47	—	0
81.144.13.48	—	0
81.144.13.49	—	0
81.144.13.50	—	0
81.144.13.51	—	0
81.144.13.52	—	0
81.144.13.53	—	0
81.144.13.54	—	0
81.144.13.55	—	0
81.144.13.56	—	0
81.144.13.57	—	0
81.144.13.58	—	0
81.144.13.59	—	0
81.144.13.60	—	0
81.144.13.61	—	0
81.144.13.62	kuwait-p-woking-s0001-1.ftip002737263.vpn-nte.bt.net	0
81.144.13.63	kuwait-p-kpilee-s0002.ftip002737263.vpn-nte.bt.net	0
81.144.13.64	—	0
81.144.13.65	wilts-cc-lndnrd-s0040.ftip002651576.vpn-nte.bt.net	0
81.144.13.66	—	0
81.144.13.67	plumbase-redrut-s0145.ftip002464862.vpn-nte.bt.net	0
81.144.13.68	—	0
81.144.13.69	—	0
81.144.13.70	—	0
81.144.13.71	—	0
81.144.13.72	—	0
81.144.13.73	—	0
81.144.13.74	—	0
81.144.13.75	—	0
81.144.13.76	—	0
81.144.13.77	—	0
81.144.13.78	—	0
81.144.13.79	—	0
81.144.13.80	brown-mc-perry-s0005.ftip002544465.vpn-nte.bt.net	0
81.144.13.81	—	0
81.144.13.82	—	0
81.144.13.83	vosp-the-waltha-s0065.ftip002350332.vpn-nte.bt.net	0
81.144.13.84	—	0
81.144.13.85	derby-ch-canalw-s0001-1.ftip002738161.vpn-nte.bt.net	0
81.144.13.86	—	0
81.144.13.87	derby-ch-raynes-s0002.ftip002738161.vpn-nte.bt.net	0
81.144.13.88	—	0
81.144.13.89	vproxy79-manchester.ftip002727509.vpn-nte.bt.net	0
81.144.13.90	—	0
81.144.13.91	—	0
81.144.13.92	essx-sch-sougn-s0175.ftip002695174.vpn-nte.bt.net	0
81.144.13.93	—	0
81.144.13.94	—	0
81.144.13.95	—	0
81.144.13.96	—	0
81.144.13.97	—	0
81.144.13.98	—	0
81.144.13.99	—	0
81.144.13.100	—	0
81.144.13.101	—	0
81.144.13.102	lookr-ne-basild-s0071.ftip002443560.vpn-nte.bt.net	0
81.144.13.103	—	0
81.144.13.104	—	0
81.144.13.105	—	0
81.144.13.106	logica-dundee-s0025.ftip002573403.vpn-nte.bt.net	0
81.144.13.107	—	0
81.144.13.108	essx-sch-tiptre-s0195.ftip002695174.vpn-nte.bt.net	0
81.144.13.109	essx-sch-trinit-s0196.ftip002695174.vpn-nte.bt.net	0
81.144.13.110	—	0
81.144.13.111	essx-sch-whiteb-s0198.ftip002695174.vpn-nte.bt.net	0
81.144.13.112	essx-sch-whitmo-s0199.ftip002695174.vpn-nte.bt.net	0
81.144.13.113	essx-sch-whitmj-s0200.ftip002695174.vpn-nte.bt.net	0
81.144.13.114	—	0
81.144.13.115	essx-sch-woodha-s0202.ftip002695174.vpn-nte.bt.net	0
81.144.13.116	—	0
81.144.13.117	—	0
81.144.13.118	—	0
81.144.13.119	—	0
81.144.13.120	—	0
81.144.13.121	—	0
81.144.13.122	—	0
81.144.13.123	—	0
81.144.13.124	cheshire-bedfor-s0012.ftip002590622.vpn-nte.bt.net	0
81.144.13.125	—	0
81.144.13.126	—	0
81.144.13.127	space-co-wellin-s0005.ftip002740379.vpn-nte.bt.net	0
81.144.13.128	space-co-soham-s0006.ftip002740379.vpn-nte.bt.net	0
81.144.13.129	is-wyco-lbleed-s0307.ftip002432083.vpn-nte.bt.net	0
81.144.13.130	—	0
81.144.13.131	—	0
81.144.13.132	is-wyco-tomax-s0295.ftip002432083.vpn-nte.bt.net	0
81.144.13.133	—	0
81.144.13.134	—	0
81.144.13.135	anshen-d-manche-s0002.ftip002740768.vpn-nte.bt.net	0
81.144.13.136	—	0
81.144.13.137	—	0
81.144.13.138	—	0
81.144.13.139	vproxy27-manchester.ftip002741253.vpn-nte.bt.net	0
81.144.13.140	—	0
81.144.13.141	—	0
81.144.13.142	—	0
81.144.13.143	swt-part-keybri-s0002-1.ftip002740843.vpn-nte.bt.net	0
81.144.13.144	—	0
81.144.13.145	—	0
81.144.13.146	—	0
81.144.13.147	—	0
81.144.13.148	—	0
81.144.13.149	—	0
81.144.13.150	—	0
81.144.13.151	—	0
81.144.13.152	—	0
81.144.13.153	—	0
81.144.13.154	—	0
81.144.13.155	—	0
81.144.13.156	—	0
81.144.13.157	—	0
81.144.13.158	—	0
81.144.13.159	—	0
81.144.13.160	—	0
81.144.13.161	—	0
81.144.13.162	—	0
81.144.13.163	—	0
81.144.13.164	—	0
81.144.13.165	—	0
81.144.13.166	—	0
81.144.13.167	—	0
81.144.13.168	—	0
81.144.13.169	—	0
81.144.13.170	—	0
81.144.13.171	—	0
81.144.13.172	—	0
81.144.13.173	—	0
81.144.13.174	—	0
81.144.13.175	—	0
81.144.13.176	—	0
81.144.13.177	—	0
81.144.13.178	—	0
81.144.13.179	—	0
81.144.13.180	—	0
81.144.13.181	vphgw23-nottingham.ftip002741253.vpn-nte.bt.net	0
81.144.13.182	—	0
81.144.13.183	gmside-c-ditton-s0029.ftip002550466.vpn-nte.bt.net	0
81.144.13.184	is-wyco-srpool-s0273.ftip002432083.vpn-nte.bt.net	0
81.144.13.185	—	0
81.144.13.186	—	0
81.144.13.187	is-wyco-ocscom-s0315-1.ftip002432083.vpn-nte.bt.net	0
81.144.13.188	gmside-c-runcor-s0030.ftip002550466.vpn-nte.bt.net	0
81.144.13.189	—	0
81.144.13.190	—	0
81.144.13.191	—	0
81.144.13.192	—	0
81.144.13.193	—	0
81.144.13.194	—	0
81.144.13.195	—	0
81.144.13.196	prolog-65-19-s0089.ftip002727479.vpn-nte.bt.net	0
81.144.13.197	—	0
81.144.13.198	—	0
81.144.13.199	—	0
81.144.13.200	—	0
81.144.13.201	—	0
81.144.13.202	—	0
81.144.13.203	—	0
81.144.13.204	—	0
81.144.13.205	trans-me-pines-s0001-1.ftip002410128.vpn-nte.bt.net	0
81.144.13.206	—	0
81.144.13.207	—	0
81.144.13.208	—	0
81.144.13.209	status-br-redrut-s0002-1.ftip002741345.vpn-nte.bt.net	0
81.144.13.210	—	0
81.144.13.211	—	0
81.144.13.212	—	0
81.144.13.213	—	0
81.144.13.214	—	0
81.144.13.215	wateratw-leeds-s0011.ftip002602301.vpn-nte.bt.net	0
81.144.13.216	—	0
81.144.13.217	—	0
81.144.13.218	—	0
81.144.13.219	—	0
81.144.13.220	—	0
81.144.13.221	—	0
81.144.13.222	—	0
81.144.13.223	—	0
81.144.13.224	—	0
81.144.13.225	—	0
81.144.13.226	—	0
81.144.13.227	—	0
81.144.13.228	—	0
81.144.13.229	—	0
81.144.13.230	r-mcalpi-cumber-s0115.ftip002596525.vpn-nte.bt.net	0
81.144.13.231	—	0
81.144.13.232	sw-train-keybri-s0182.ftip002421384.vpn-nte.bt.net	0
81.144.13.233	—	0
81.144.13.234	—	0
81.144.13.235	sw-trains-shamo2-s0184.ftip002421384.vpn-nte.bt.net	0
81.144.13.236	—	0
81.144.13.237	—	0
81.144.13.238	—	0
81.144.13.239	sw-trains-feldc2-s191.ftip002421384.vpn-nte.bt.net	0
81.144.13.240	—	0
81.144.13.241	—	0
81.144.13.242	—	0
81.144.13.243	—	0
81.144.13.244	—	0
81.144.13.245	—	0
81.144.13.246	—	0
81.144.13.247	—	0
81.144.13.248	—	0
81.144.13.249	—	0
81.144.13.250	—	0
81.144.13.251	—	0
81.144.13.252	—	0
81.144.13.253	—	0
81.144.13.254	—	0
81.144.13.255	—	0

Traceroute

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

traceroute -a -n -q1 -m5 81.144.13.2

traceroute to 81.144.13.2 (81.144.13.2): 5 hops max, 52 byte packets

1 [AS15169] 142.251.50.125 39.54 ms

2 [AS2856] 109.159.253.2 41.63 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Hamina, FI

On December 14th 2025