81.187.51.0/24 IP Range

Summary

ASN	AS20712 Andrews & Arnold Ltd
BGP	81.187.0.0/16
IPs with RDNS	256
Hosted Domains	0
Pingable IPs	12
Router IPs	0


81.187.51.0	81-187-51-0.ip4.reverse-dns.uk	0
81.187.51.1	81-187-51-1.ip4.reverse-dns.uk	0
81.187.51.2	2.51.187.81.in-addr.arpa	0
81.187.51.3	3.51.187.81.in-addr.arpa	0
81.187.51.4	4.51.187.81.in-addr.arpa	0
81.187.51.5	81-187-51-5.ip4.reverse-dns.uk	0
81.187.51.6	6.51.187.81.in-addr.arpa	0
81.187.51.7	7.51.187.81.in-addr.arpa	0
81.187.51.8	81-187-51-8.ip4.reverse-dns.uk	0
81.187.51.9	9.51.187.81.in-addr.arpa	0
81.187.51.10	10.51.187.81.in-addr.arpa	0
81.187.51.11	81-187-51-11.ip4.reverse-dns.uk	0
81.187.51.12	12.51.187.81.in-addr.arpa	0
81.187.51.13	13.51.187.81.in-addr.arpa	0
81.187.51.14	81-187-51-14.ip4.reverse-dns.uk	0
81.187.51.15	15.51.187.81.in-addr.arpa	0
81.187.51.16	81-187-51-16.ip4.reverse-dns.uk	0
81.187.51.17	17.51.187.81.in-addr.arpa	0
81.187.51.18	81-187-51-18.ip4.reverse-dns.uk	0
81.187.51.19	81-187-51-19.ip4.reverse-dns.uk	0
81.187.51.20	20.51.187.81.in-addr.arpa	0
81.187.51.21	21.51.187.81.in-addr.arpa	0
81.187.51.22	81-187-51-22.ip4.reverse-dns.uk	0
81.187.51.23	81-187-51-23.ip4.reverse-dns.uk	0
81.187.51.24	81-187-51-24.ip4.reverse-dns.uk	0
81.187.51.25	25.51.187.81.in-addr.arpa	0
81.187.51.26	26.51.187.81.in-addr.arpa	0
81.187.51.27	27.51.187.81.in-addr.arpa	0
81.187.51.28	28.51.187.81.in-addr.arpa	0
81.187.51.29	81-187-51-29.ip4.reverse-dns.uk	0
81.187.51.30	30.51.187.81.in-addr.arpa	0
81.187.51.31	81-187-51-31.ip4.reverse-dns.uk	0
81.187.51.32	81-187-51-32.ip4.reverse-dns.uk	0
81.187.51.33	33.51.187.81.in-addr.arpa	0
81.187.51.34	34.51.187.81.in-addr.arpa	0
81.187.51.35	35.51.187.81.in-addr.arpa	0
81.187.51.36	36.51.187.81.in-addr.arpa	0
81.187.51.37	37.51.187.81.in-addr.arpa	0
81.187.51.38	38.51.187.81.in-addr.arpa	0
81.187.51.39	39.51.187.81.in-addr.arpa	0
81.187.51.40	81-187-51-40.ip4.reverse-dns.uk	0
81.187.51.41	41.51.187.81.in-addr.arpa	0
81.187.51.42	42.51.187.81.in-addr.arpa	0
81.187.51.43	43.51.187.81.in-addr.arpa	0
81.187.51.44	44.51.187.81.in-addr.arpa	0
81.187.51.45	81-187-51-45.ip4.reverse-dns.uk	0
81.187.51.46	81-187-51-46.ip4.reverse-dns.uk	0
81.187.51.47	81-187-51-47.ip4.reverse-dns.uk	0
81.187.51.48	81-187-51-48.ip4.reverse-dns.uk	0
81.187.51.49	49.51.187.81.in-addr.arpa	0
81.187.51.50	50.51.187.81.in-addr.arpa	0
81.187.51.51	81-187-51-51.ip4.reverse-dns.uk	0
81.187.51.52	81-187-51-52.ip4.reverse-dns.uk	0
81.187.51.53	81-187-51-53.ip4.reverse-dns.uk	0
81.187.51.54	54.51.187.81.in-addr.arpa	0
81.187.51.55	81-187-51-55.ip4.reverse-dns.uk	0
81.187.51.56	56.51.187.81.in-addr.arpa	0
81.187.51.57	57.51.187.81.in-addr.arpa	0
81.187.51.58	81-187-51-58.ip4.reverse-dns.uk	0
81.187.51.59	81-187-51-59.ip4.reverse-dns.uk	0
81.187.51.60	81-187-51-60.ip4.reverse-dns.uk	0
81.187.51.61	61.51.187.81.in-addr.arpa	0
81.187.51.62	62.51.187.81.in-addr.arpa	0
81.187.51.63	81-187-51-63.ip4.reverse-dns.uk	0
81.187.51.64	64.51.187.81.in-addr.arpa	0
81.187.51.65	65.51.187.81.in-addr.arpa	0
81.187.51.66	66.51.187.81.in-addr.arpa	0
81.187.51.67	67.51.187.81.in-addr.arpa	0
81.187.51.68	68.51.187.81.in-addr.arpa	0
81.187.51.69	69.51.187.81.in-addr.arpa	0
81.187.51.70	81-187-51-70.ip4.reverse-dns.uk	0
81.187.51.71	71.51.187.81.in-addr.arpa	0
81.187.51.72	81-187-51-72.ip4.reverse-dns.uk	0
81.187.51.73	73.51.187.81.in-addr.arpa	0
81.187.51.74	81-187-51-74.ip4.reverse-dns.uk	0
81.187.51.75	81-187-51-75.ip4.reverse-dns.uk	0
81.187.51.76	76.51.187.81.in-addr.arpa	0
81.187.51.77	77.51.187.81.in-addr.arpa	0
81.187.51.78	81-187-51-78.ip4.reverse-dns.uk	0
81.187.51.79	79.51.187.81.in-addr.arpa	0
81.187.51.80	80.51.187.81.in-addr.arpa	0
81.187.51.81	81.51.187.81.in-addr.arpa	0
81.187.51.82	81-187-51-82.ip4.reverse-dns.uk	0
81.187.51.83	83.51.187.81.in-addr.arpa	0
81.187.51.84	84.51.187.81.in-addr.arpa	0
81.187.51.85	85.51.187.81.in-addr.arpa	0
81.187.51.86	86.51.187.81.in-addr.arpa	0
81.187.51.87	81-187-51-87.ip4.reverse-dns.uk	0
81.187.51.88	81-187-51-88.ip4.reverse-dns.uk	0
81.187.51.89	89.51.187.81.in-addr.arpa	0
81.187.51.90	90.51.187.81.in-addr.arpa	0
81.187.51.91	91.51.187.81.in-addr.arpa	0
81.187.51.92	81-187-51-92.ip4.reverse-dns.uk	0
81.187.51.93	93.51.187.81.in-addr.arpa	0
81.187.51.94	94.51.187.81.in-addr.arpa	0
81.187.51.95	95.51.187.81.in-addr.arpa	0
81.187.51.96	96.51.187.81.in-addr.arpa	0
81.187.51.97	97.51.187.81.in-addr.arpa	0
81.187.51.98	98.51.187.81.in-addr.arpa	0
81.187.51.99	99.51.187.81.in-addr.arpa	0
81.187.51.100	100.51.187.81.in-addr.arpa	0
81.187.51.101	101.51.187.81.in-addr.arpa	0
81.187.51.102	102.51.187.81.in-addr.arpa	0
81.187.51.103	81-187-51-103.ip4.reverse-dns.uk	0
81.187.51.104	81-187-51-104.ip4.reverse-dns.uk	0
81.187.51.105	105.51.187.81.in-addr.arpa	0
81.187.51.106	106.51.187.81.in-addr.arpa	0
81.187.51.107	mx.exspiravit.org	0
81.187.51.108	81-187-51-108.ip4.reverse-dns.uk	0
81.187.51.109	109.51.187.81.in-addr.arpa	0
81.187.51.110	110.51.187.81.in-addr.arpa	0
81.187.51.111	81-187-51-111.ip4.reverse-dns.uk	0
81.187.51.112	112.51.187.81.in-addr.arpa	0
81.187.51.113	113.51.187.81.in-addr.arpa	0
81.187.51.114	114.51.187.81.in-addr.arpa	0
81.187.51.115	115.51.187.81.in-addr.arpa	0
81.187.51.116	116.51.187.81.in-addr.arpa	0
81.187.51.117	117.51.187.81.in-addr.arpa	0
81.187.51.118	118.51.187.81.in-addr.arpa	0
81.187.51.119	119.51.187.81.in-addr.arpa	0
81.187.51.120	120.51.187.81.in-addr.arpa	0
81.187.51.121	121.51.187.81.in-addr.arpa	0
81.187.51.122	122.51.187.81.in-addr.arpa	0
81.187.51.123	123.51.187.81.in-addr.arpa	0
81.187.51.124	124.51.187.81.in-addr.arpa	0
81.187.51.125	125.51.187.81.in-addr.arpa	0
81.187.51.126	81-187-51-126.ip4.reverse-dns.uk	0
81.187.51.127	127.51.187.81.in-addr.arpa	0
81.187.51.128	128.51.187.81.in-addr.arpa	0
81.187.51.129	81-187-51-129.ip4.reverse-dns.uk	0
81.187.51.130	130.51.187.81.in-addr.arpa	0
81.187.51.131	131.51.187.81.in-addr.arpa	0
81.187.51.132	132.51.187.81.in-addr.arpa	0
81.187.51.133	133.51.187.81.in-addr.arpa	0
81.187.51.134	134.51.187.81.in-addr.arpa	0
81.187.51.135	81-187-51-135.ip4.reverse-dns.uk	0
81.187.51.136	136.51.187.81.in-addr.arpa	0
81.187.51.137	137.51.187.81.in-addr.arpa	0
81.187.51.138	138.51.187.81.in-addr.arpa	0
81.187.51.139	139.51.187.81.in-addr.arpa	0
81.187.51.140	140.51.187.81.in-addr.arpa	0
81.187.51.141	141.51.187.81.in-addr.arpa	0
81.187.51.142	81-187-51-142.ip4.reverse-dns.uk	0
81.187.51.143	81-187-51-143.ip4.reverse-dns.uk	0
81.187.51.144	81-187-51-144.ip4.reverse-dns.uk	0
81.187.51.145	145.51.187.81.in-addr.arpa	0
81.187.51.146	81-187-51-146.ip4.reverse-dns.uk	0
81.187.51.147	147.51.187.81.in-addr.arpa	0
81.187.51.148	81-187-51-148.ip4.reverse-dns.uk	0
81.187.51.149	149.51.187.81.in-addr.arpa	0
81.187.51.150	mail1.cedia.co.uk	0
81.187.51.151	151.51.187.81.in-addr.arpa	0
81.187.51.152	81-187-51-152.ip4.reverse-dns.uk	0
81.187.51.153	153.51.187.81.in-addr.arpa	0
81.187.51.154	154.51.187.81.in-addr.arpa	0
81.187.51.155	155.51.187.81.in-addr.arpa	0
81.187.51.156	156.51.187.81.in-addr.arpa	0
81.187.51.157	157.51.187.81.in-addr.arpa	0
81.187.51.158	158.51.187.81.in-addr.arpa	0
81.187.51.159	159.51.187.81.in-addr.arpa	0
81.187.51.160	160.51.187.81.in-addr.arpa	0
81.187.51.161	161.51.187.81.in-addr.arpa	0
81.187.51.162	162.51.187.81.in-addr.arpa	0
81.187.51.163	163.51.187.81.in-addr.arpa	0
81.187.51.164	164.51.187.81.in-addr.arpa	0
81.187.51.165	165.51.187.81.in-addr.arpa	0
81.187.51.166	166.51.187.81.in-addr.arpa	0
81.187.51.167	167.51.187.81.in-addr.arpa	0
81.187.51.168	168.51.187.81.in-addr.arpa	0
81.187.51.169	169.51.187.81.in-addr.arpa	0
81.187.51.170	170.51.187.81.in-addr.arpa	0
81.187.51.171	171.51.187.81.in-addr.arpa	0
81.187.51.172	81-187-51-172.ip4.reverse-dns.uk	0
81.187.51.173	81-187-51-173.ip4.reverse-dns.uk	0
81.187.51.174	174.51.187.81.in-addr.arpa	0
81.187.51.175	175.51.187.81.in-addr.arpa	0
81.187.51.176	176.51.187.81.in-addr.arpa	0
81.187.51.177	177.51.187.81.in-addr.arpa	0
81.187.51.178	178.51.187.81.in-addr.arpa	0
81.187.51.179	179.51.187.81.in-addr.arpa	0
81.187.51.180	180.51.187.81.in-addr.arpa	0
81.187.51.181	181.51.187.81.in-addr.arpa	0
81.187.51.182	182.51.187.81.in-addr.arpa	0
81.187.51.183	81-187-51-183.ip4.reverse-dns.uk	0
81.187.51.184	184.51.187.81.in-addr.arpa	0
81.187.51.185	185.51.187.81.in-addr.arpa	0
81.187.51.186	186.51.187.81.in-addr.arpa	0
81.187.51.187	187.51.187.81.in-addr.arpa	0
81.187.51.188	188.51.187.81.in-addr.arpa	0
81.187.51.189	189.51.187.81.in-addr.arpa	0
81.187.51.190	81-187-51-190.ip4.reverse-dns.uk	0
81.187.51.191	191.51.187.81.in-addr.arpa	0
81.187.51.192	81-187-51-192.ip4.reverse-dns.uk	0
81.187.51.193	193.51.187.81.in-addr.arpa	0
81.187.51.194	194.51.187.81.in-addr.arpa	0
81.187.51.195	195.51.187.81.in-addr.arpa	0
81.187.51.196	196.51.187.81.in-addr.arpa	0
81.187.51.197	197.51.187.81.in-addr.arpa	0
81.187.51.198	198.51.187.81.in-addr.arpa	0
81.187.51.199	199.51.187.81.in-addr.arpa	0
81.187.51.200	200.51.187.81.in-addr.arpa	0
81.187.51.201	201.51.187.81.in-addr.arpa	0
81.187.51.202	202.51.187.81.in-addr.arpa	0
81.187.51.203	203.51.187.81.in-addr.arpa	0
81.187.51.204	204.51.187.81.in-addr.arpa	0
81.187.51.205	205.51.187.81.in-addr.arpa	0
81.187.51.206	206.51.187.81.in-addr.arpa	0
81.187.51.207	207.51.187.81.in-addr.arpa	0
81.187.51.208	208.51.187.81.in-addr.arpa	0
81.187.51.209	209.51.187.81.in-addr.arpa	0
81.187.51.210	210.51.187.81.in-addr.arpa	0
81.187.51.211	211.51.187.81.in-addr.arpa	0
81.187.51.212	212.51.187.81.in-addr.arpa	0
81.187.51.213	213.51.187.81.in-addr.arpa	0
81.187.51.214	cam.wales.aa.net.uk	0
81.187.51.215	215.51.187.81.in-addr.arpa	0
81.187.51.216	216.51.187.81.in-addr.arpa	0
81.187.51.217	81-187-51-217.ip4.reverse-dns.uk	0
81.187.51.218	81-187-51-218.ip4.reverse-dns.uk	0
81.187.51.219	219.51.187.81.in-addr.arpa	0
81.187.51.220	220.51.187.81.in-addr.arpa	0
81.187.51.221	81-187-51-221.ip4.reverse-dns.uk	0
81.187.51.222	222.51.187.81.in-addr.arpa	0
81.187.51.223	223.51.187.81.in-addr.arpa	0
81.187.51.224	224.51.187.81.in-addr.arpa	0
81.187.51.225	225.51.187.81.in-addr.arpa	0
81.187.51.226	226.51.187.81.in-addr.arpa	0
81.187.51.227	227.51.187.81.in-addr.arpa	0
81.187.51.228	228.51.187.81.in-addr.arpa	0
81.187.51.229	229.51.187.81.in-addr.arpa	0
81.187.51.230	81-187-51-230.ip4.reverse-dns.uk	0
81.187.51.231	231.51.187.81.in-addr.arpa	0
81.187.51.232	232.51.187.81.in-addr.arpa	0
81.187.51.233	233.51.187.81.in-addr.arpa	0
81.187.51.234	234.51.187.81.in-addr.arpa	0
81.187.51.235	235.51.187.81.in-addr.arpa	0
81.187.51.236	236.51.187.81.in-addr.arpa	0
81.187.51.237	237.51.187.81.in-addr.arpa	0
81.187.51.238	238.51.187.81.in-addr.arpa	0
81.187.51.239	239.51.187.81.in-addr.arpa	0
81.187.51.240	war-int-nw.rtr.mfmb.co.uk	0
81.187.51.241	war-int-gw.rtr.mfmb.co.uk	0
81.187.51.242	mfmbws06.int.mfmb.co.uk	0
81.187.51.243	mfmbws07.int.mfmb.co.uk	0
81.187.51.244	mfmbws08.int.mfmb.co.uk	0
81.187.51.245	mfmbpr01.int.mfmb.co.uk	0
81.187.51.246	dhcp246.int.mfmb.co.uk	0
81.187.51.247	dhcp247.int.mfmb.co.uk	0
81.187.51.248	dhcp248.int.mfmb.co.uk	0
81.187.51.249	dhcp249.int.mfmb.co.uk	0
81.187.51.250	dhcp250.int.mfmb.co.uk	0
81.187.51.251	dhcp251.int.mfmb.co.uk	0
81.187.51.252	dhcp252.int.mfmb.co.uk	0
81.187.51.253	dhcp253.int.mfmb.co.uk	0
81.187.51.254	dhcp254.int.mfmb.co.uk	0
81.187.51.255	war-int-bc.rtr.mfmb.co.uk	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 81.187.51.54

traceroute to 81.187.51.54 (81.187.51.54): 64 hops max, 52 byte packets

3 [AS20712] 192.150.92.24 0.257 ms

4 [AS20712] 192.150.92.47 0.337 ms

5 [AS20712] 81.187.51.54 3.551 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On October 3rd 2025