81.187.75.0/24 IP Range

Summary

ASN	AS20712 Andrews & Arnold Ltd
BGP	81.187.0.0/16
IPs with RDNS	241
Hosted Domains	0
Pingable IPs	35
Router IPs	1


81.187.75.0	network.wireless.knigma.org	0
81.187.75.1	shrewd.wireless.knigma.org	0
81.187.75.2	pi.wireless.knigma.org	0
81.187.75.3	mac.wireless.knigma.org	0
81.187.75.4	lap.wireless.knigma.org	0
81.187.75.5	nanohd-lounge.wireless.knigma.org	0
81.187.75.6	nanohd-office.wireless.knigma.org	0
81.187.75.7	dhcp1.wireless.knigma.org	0
81.187.75.8	dhcp2.wireless.knigma.org	0
81.187.75.9	dhcp3.wireless.knigma.org	0
81.187.75.10	dhcp4.wireless.knigma.org	0
81.187.75.11	dhcp5.wireless.knigma.org	0
81.187.75.12	dhcp6.wireless.knigma.org	0
81.187.75.13	dhcp7.wireless.knigma.org	0
81.187.75.14	dhcp8.wireless.knigma.org	0
81.187.75.15	dhcp9.wireless.knigma.org	0
81.187.75.16	dhcp10.wireless.knigma.org	0
81.187.75.17	dhcp11.wireless.knigma.org	0
81.187.75.18	dhcp12.wireless.knigma.org	0
81.187.75.19	dhcp13.wireless.knigma.org	0
81.187.75.20	dhcp14.wireless.knigma.org	0
81.187.75.21	dhcp15.wireless.knigma.org	0
81.187.75.22	dhcp16.wireless.knigma.org	0
81.187.75.23	dhcp17.wireless.knigma.org	0
81.187.75.24	dhcp18.wireless.knigma.org	0
81.187.75.25	dhcp19.wireless.knigma.org	0
81.187.75.26	dhcp20.wireless.knigma.org	0
81.187.75.27	nanohd-boost.wireless.knigma.org	0
81.187.75.28	appletv-lounge.wireless.knigma.org	0
81.187.75.29	denon.wireless.knigma.org	0
81.187.75.30	nanohd-gym.wireless.knigma.org	0
81.187.75.31	broadcast.wireless.knigma.org	0
81.187.75.32	32.75.187.81.in-addr.arpa	0
81.187.75.33	81-187-75-33.ip4.reverse-dns.uk	0
81.187.75.34	81-187-75-34.ip4.reverse-dns.uk	0
81.187.75.35	81-187-75-35.ip4.reverse-dns.uk	0
81.187.75.36	36.75.187.81.in-addr.arpa	0
81.187.75.37	37.75.187.81.in-addr.arpa	0
81.187.75.38	38.75.187.81.in-addr.arpa	0
81.187.75.39	39.75.187.81.in-addr.arpa	0
81.187.75.40	40.75.187.81.in-addr.arpa	0
81.187.75.41	81-187-75-41.ip4.reverse-dns.uk	0
81.187.75.42	42.75.187.81.in-addr.arpa	0
81.187.75.43	81-187-75-43.ip4.reverse-dns.uk	0
81.187.75.44	44.75.187.81.in-addr.arpa	0
81.187.75.45	81-187-75-45.ip4.reverse-dns.uk	0
81.187.75.46	46.75.187.81.in-addr.arpa	0
81.187.75.47	81-187-75-47.ip4.reverse-dns.uk	0
81.187.75.48	81-187-75-48.ip4.reverse-dns.uk	0
81.187.75.49	49.75.187.81.in-addr.arpa	0
81.187.75.50	50.75.187.81.in-addr.arpa	0
81.187.75.51	81-187-75-51.ip4.reverse-dns.uk	0
81.187.75.52	52.75.187.81.in-addr.arpa	0
81.187.75.53	53.75.187.81.in-addr.arpa	0
81.187.75.54	54.75.187.81.in-addr.arpa	0
81.187.75.55	55.75.187.81.in-addr.arpa	0
81.187.75.56	56.75.187.81.in-addr.arpa	0
81.187.75.57	57.75.187.81.in-addr.arpa	0
81.187.75.58	81-187-75-58.ip4.reverse-dns.uk	0
81.187.75.59	59.75.187.81.in-addr.arpa	0
81.187.75.60	81-187-75-60.ip4.reverse-dns.uk	0
81.187.75.61	61.75.187.81.in-addr.arpa	0
81.187.75.62	81-187-75-62.ip4.reverse-dns.uk	0
81.187.75.63	81-187-75-63.ip4.reverse-dns.uk	0
81.187.75.64	64.75.187.81.in-addr.arpa	0
81.187.75.65	65.75.187.81.in-addr.arpa	0
81.187.75.66	81-187-75-66.ip4.reverse-dns.uk	0
81.187.75.67	81-187-75-67.ip4.reverse-dns.uk	0
81.187.75.68	81-187-75-68.ip4.reverse-dns.uk	0
81.187.75.69	81-187-75-69.ip4.reverse-dns.uk	0
81.187.75.70	70.75.187.81.in-addr.arpa	0
81.187.75.71	71.75.187.81.in-addr.arpa	0
81.187.75.72	81-187-75-72.ip4.reverse-dns.uk	0
81.187.75.73	mailsrv.p4m.online	0
81.187.75.74	74.75.187.81.in-addr.arpa	0
81.187.75.75	75.75.187.81.in-addr.arpa	0
81.187.75.76	76.75.187.81.in-addr.arpa	0
81.187.75.77	77.75.187.81.in-addr.arpa	0
81.187.75.78	81-187-75-78.ip4.reverse-dns.uk	0
81.187.75.79	79.75.187.81.in-addr.arpa	0
81.187.75.80	—	0
81.187.75.81	coconut.noisytoot.org	0
81.187.75.82	—	0
81.187.75.83	—	0
81.187.75.84	—	0
81.187.75.85	—	0
81.187.75.86	—	0
81.187.75.87	—	0
81.187.75.88	—	0
81.187.75.89	—	0
81.187.75.90	—	0
81.187.75.91	—	0
81.187.75.92	—	0
81.187.75.93	—	0
81.187.75.94	—	0
81.187.75.95	—	0
81.187.75.96	81-187-75-96.ip4.reverse-dns.uk	0
81.187.75.97	81-187-75-97.ip4.reverse-dns.uk	0
81.187.75.98	81-187-75-98.ip4.reverse-dns.uk	0
81.187.75.99	81-187-75-99.ip4.reverse-dns.uk	0
81.187.75.100	100.75.187.81.in-addr.arpa	0
81.187.75.101	101.75.187.81.in-addr.arpa	0
81.187.75.102	102.75.187.81.in-addr.arpa	0
81.187.75.103	81-187-75-103.ip4.reverse-dns.uk	0
81.187.75.104	104.75.187.81.in-addr.arpa	0
81.187.75.105	81-187-75-105.ip4.reverse-dns.uk	0
81.187.75.106	106.75.187.81.in-addr.arpa	0
81.187.75.107	107.75.187.81.in-addr.arpa	0
81.187.75.108	108.75.187.81.in-addr.arpa	0
81.187.75.109	109.75.187.81.in-addr.arpa	0
81.187.75.110	110.75.187.81.in-addr.arpa	0
81.187.75.111	111.75.187.81.in-addr.arpa	0
81.187.75.112	81-187-75-112.ip4.reverse-dns.uk	0
81.187.75.113	113.75.187.81.in-addr.arpa	0
81.187.75.114	114.75.187.81.in-addr.arpa	0
81.187.75.115	115.75.187.81.in-addr.arpa	0
81.187.75.116	116.75.187.81.in-addr.arpa	0
81.187.75.117	81-187-75-117.ip4.reverse-dns.uk	0
81.187.75.118	118.75.187.81.in-addr.arpa	0
81.187.75.119	119.75.187.81.in-addr.arpa	0
81.187.75.120	120.75.187.81.in-addr.arpa	0
81.187.75.121	81-187-75-121.ip4.reverse-dns.uk	0
81.187.75.122	81-187-75-122.ip4.reverse-dns.uk	0
81.187.75.123	123.75.187.81.in-addr.arpa	0
81.187.75.124	124.75.187.81.in-addr.arpa	0
81.187.75.125	125.75.187.81.in-addr.arpa	0
81.187.75.126	81-187-75-126.ip4.reverse-dns.uk	0
81.187.75.127	127.75.187.81.in-addr.arpa	0
81.187.75.128	128.75.187.81.in-addr.arpa	0
81.187.75.129	81-187-75-129.ip4.reverse-dns.uk	0
81.187.75.130	81-187-75-130.ip4.reverse-dns.uk	0
81.187.75.131	131.75.187.81.in-addr.arpa	0
81.187.75.132	132.75.187.81.in-addr.arpa	0
81.187.75.133	81-187-75-133.ip4.reverse-dns.uk	0
81.187.75.134	81-187-75-134.ip4.reverse-dns.uk	0
81.187.75.135	135.75.187.81.in-addr.arpa	0
81.187.75.136	136.75.187.81.in-addr.arpa	0
81.187.75.137	81-187-75-137.ip4.reverse-dns.uk	0
81.187.75.138	138.75.187.81.in-addr.arpa	0
81.187.75.139	81-187-75-139.ip4.reverse-dns.uk	0
81.187.75.140	140.75.187.81.in-addr.arpa	0
81.187.75.141	81-187-75-141.ip4.reverse-dns.uk	0
81.187.75.142	142.75.187.81.in-addr.arpa	0
81.187.75.143	81-187-75-143.ip4.reverse-dns.uk	0
81.187.75.144	144.75.187.81.in-addr.arpa	0
81.187.75.145	145.75.187.81.in-addr.arpa	0
81.187.75.146	81-187-75-146.ip4.reverse-dns.uk	0
81.187.75.147	ext-gw.larted.org.uk	0
81.187.75.148	81-187-75-148.ip4.reverse-dns.uk	0
81.187.75.149	81-187-75-149.ip4.reverse-dns.uk	0
81.187.75.150	150.75.187.81.in-addr.arpa	0
81.187.75.151	151.75.187.81.in-addr.arpa	0
81.187.75.152	152.75.187.81.in-addr.arpa	0
81.187.75.153	153.75.187.81.in-addr.arpa	0
81.187.75.154	81-187-75-154.ip4.reverse-dns.uk	0
81.187.75.155	155.75.187.81.in-addr.arpa	0
81.187.75.156	81-187-75-156.ip4.reverse-dns.uk	0
81.187.75.157	157.75.187.81.in-addr.arpa	0
81.187.75.158	158.75.187.81.in-addr.arpa	0
81.187.75.159	159.75.187.81.in-addr.arpa	0
81.187.75.160	81-187-75-160.ip4.reverse-dns.uk	0
81.187.75.161	81-187-75-161.ip4.reverse-dns.uk	0
81.187.75.162	81-187-75-162.ip4.reverse-dns.uk	0
81.187.75.163	163.75.187.81.in-addr.arpa	0
81.187.75.164	164.75.187.81.in-addr.arpa	0
81.187.75.165	165.75.187.81.in-addr.arpa	0
81.187.75.166	166.75.187.81.in-addr.arpa	0
81.187.75.167	167.75.187.81.in-addr.arpa	0
81.187.75.168	168.75.187.81.in-addr.arpa	0
81.187.75.169	81-187-75-169.ip4.reverse-dns.uk	0
81.187.75.170	170.75.187.81.in-addr.arpa	0
81.187.75.171	171.75.187.81.in-addr.arpa	0
81.187.75.172	172.75.187.81.in-addr.arpa	0
81.187.75.173	173.75.187.81.in-addr.arpa	0
81.187.75.174	81-187-75-174.ip4.reverse-dns.uk	0
81.187.75.175	81-187-75-175.ip4.reverse-dns.uk	0
81.187.75.176	176.75.187.81.in-addr.arpa	0
81.187.75.177	81-187-75-177.ip4.reverse-dns.uk	0
81.187.75.178	178.75.187.81.in-addr.arpa	0
81.187.75.179	81-187-75-179.ip4.reverse-dns.uk	0
81.187.75.180	81-187-75-180.ip4.reverse-dns.uk	0
81.187.75.181	181.75.187.81.in-addr.arpa	0
81.187.75.182	182.75.187.81.in-addr.arpa	0
81.187.75.183	183.75.187.81.in-addr.arpa	0
81.187.75.184	184.75.187.81.in-addr.arpa	0
81.187.75.185	185.75.187.81.in-addr.arpa	0
81.187.75.186	81-187-75-186.ip4.reverse-dns.uk	0
81.187.75.187	187.75.187.81.in-addr.arpa	0
81.187.75.188	81-187-75-188.ip4.reverse-dns.uk	0
81.187.75.189	189.75.187.81.in-addr.arpa	0
81.187.75.190	190.75.187.81.in-addr.arpa	0
81.187.75.191	191.75.187.81.in-addr.arpa	0
81.187.75.192	192.75.187.81.in-addr.arpa	0
81.187.75.193	81-187-75-193.ip4.reverse-dns.uk	0
81.187.75.194	194.75.187.81.in-addr.arpa	0
81.187.75.195	195.75.187.81.in-addr.arpa	0
81.187.75.196	196.75.187.81.in-addr.arpa	0
81.187.75.197	81-187-75-197.ip4.reverse-dns.uk	0
81.187.75.198	198.75.187.81.in-addr.arpa	0
81.187.75.199	199.75.187.81.in-addr.arpa	0
81.187.75.200	81-187-75-200.ip4.reverse-dns.uk	0
81.187.75.201	81-187-75-201.ip4.reverse-dns.uk	0
81.187.75.202	202.75.187.81.in-addr.arpa	0
81.187.75.203	203.75.187.81.in-addr.arpa	0
81.187.75.204	81-187-75-204.ip4.reverse-dns.uk	0
81.187.75.205	81-187-75-205.ip4.reverse-dns.uk	0
81.187.75.206	206.75.187.81.in-addr.arpa	0
81.187.75.207	207.75.187.81.in-addr.arpa	0
81.187.75.208	208.75.187.81.in-addr.arpa	0
81.187.75.209	209.75.187.81.in-addr.arpa	0
81.187.75.210	210.75.187.81.in-addr.arpa	0
81.187.75.211	81-187-75-211.ip4.reverse-dns.uk	0
81.187.75.212	212.75.187.81.in-addr.arpa	0
81.187.75.213	213.75.187.81.in-addr.arpa	0
81.187.75.214	214.75.187.81.in-addr.arpa	0
81.187.75.215	215.75.187.81.in-addr.arpa	0
81.187.75.216	81-187-75-216.ip4.reverse-dns.uk	0
81.187.75.217	217.75.187.81.in-addr.arpa	0
81.187.75.218	218.75.187.81.in-addr.arpa	0
81.187.75.219	219.75.187.81.in-addr.arpa	0
81.187.75.220	81-187-75-220.ip4.reverse-dns.uk	0
81.187.75.221	81-187-75-221.ip4.reverse-dns.uk	0
81.187.75.222	222.75.187.81.in-addr.arpa	0
81.187.75.223	223.75.187.81.in-addr.arpa	0
81.187.75.224	81-187-75-224.ip4.reverse-dns.uk	0
81.187.75.225	225.75.187.81.in-addr.arpa	0
81.187.75.226	226.75.187.81.in-addr.arpa	0
81.187.75.227	81-187-75-227.ip4.reverse-dns.uk	0
81.187.75.228	81-187-75-228.ip4.reverse-dns.uk	0
81.187.75.229	81-187-75-229.ip4.reverse-dns.uk	0
81.187.75.230	230.75.187.81.in-addr.arpa	0
81.187.75.231	231.75.187.81.in-addr.arpa	0
81.187.75.232	81-187-75-232.ip4.reverse-dns.uk	0
81.187.75.233	233.75.187.81.in-addr.arpa	0
81.187.75.234	234.75.187.81.in-addr.arpa	0
81.187.75.235	235.75.187.81.in-addr.arpa	0
81.187.75.236	236.75.187.81.in-addr.arpa	0
81.187.75.237	81-187-75-237.ip4.reverse-dns.uk	0
81.187.75.238	238.75.187.81.in-addr.arpa	0
81.187.75.239	239.75.187.81.in-addr.arpa	0
81.187.75.240	240.75.187.81.in-addr.arpa	0
81.187.75.241	81-187-75-241.ip4.reverse-dns.uk	0
81.187.75.242	81-187-75-242.ip4.reverse-dns.uk	0
81.187.75.243	243.75.187.81.in-addr.arpa	0
81.187.75.244	244.75.187.81.in-addr.arpa	0
81.187.75.245	245.75.187.81.in-addr.arpa	0
81.187.75.246	246.75.187.81.in-addr.arpa	0
81.187.75.247	81-187-75-247.ip4.reverse-dns.uk	0
81.187.75.248	248.75.187.81.in-addr.arpa	0
81.187.75.249	249.75.187.81.in-addr.arpa	0
81.187.75.250	250.75.187.81.in-addr.arpa	0
81.187.75.251	251.75.187.81.in-addr.arpa	0
81.187.75.252	81-187-75-252.ip4.reverse-dns.uk	0
81.187.75.253	253.75.187.81.in-addr.arpa	0
81.187.75.254	254.75.187.81.in-addr.arpa	0
81.187.75.255	81-187-75-255.ip4.reverse-dns.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 -f2 81.187.75.115

traceroute to 81.187.75.115 (81.187.75.115): 64 hops max, 52 byte packets

2 [AS20712] 192.150.92.24 0.621 ms

3 [AS20712] 192.150.92.47 0.692 ms

4 [AS20712] 81.187.75.115 3.257 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On November 15th 2025