Summary
| ASN | AS41230 ASK4 Limited |
| BGP | 81.23.48.0/20 |
| IPs with RDNS | 256 |
| Hosted Domains | 0 |
| Pingable IPs | 56 |
| Router IPs | 3 |
| 81.23.52.0 | subnet-52-0.ask4internet.com | 0 |  | |
| 81.23.52.1 | gw-vlan4.tor-11-2.pod1.dc1.ask4.net | 0 |  | |
| 81.23.52.2 | 4voice-fe2.ask4internet.com | 0 | | |
| 81.23.52.3 | 4voice-fe1.ask4internet.com | 0 | | |
| 81.23.52.4 | ns2.ask4internet.com | 0 | | |
| 81.23.52.5 | ntp2.ask4internet.com | 0 | | |
| 81.23.52.6 | ldap-2.ask4.net | 0 | | |
| 81.23.52.7 | dns-admin.ask4internet.com | 0 | | |
| 81.23.52.8 | nagios.ask4.com | 0 | | |
| 81.23.52.9 | ldap-qa-2.ask4.net | 0 | | |
| 81.23.52.10 | ip-81-23-52-10.ask4internet.com | 0 | | |
| 81.23.52.11 | ip-81-23-52-11.ask4internet.com | 0 | | |
| 81.23.52.12 | ip-81-23-52-12.ask4internet.com | 0 | | |
| 81.23.52.13 | payment.ask4.com | 0 | | |
| 81.23.52.14 | vh-pbx.ask4internet.com | 0 | | |
| 81.23.52.15 | orderly-el7-devel.ask4.net | 0 | | |
| 81.23.52.16 | syslog.ask4internet.com | 0 | | |
| 81.23.52.17 | 4voice-db.ask4internet.com | 0 | | |
| 81.23.52.18 | cf-wan-ipsec.ask4.net | 0 | | |
| 81.23.52.19 | ip-81-23-52-19.ask4internet.com | 0 | | |
| 81.23.52.20 | slamon.ask4.net | 0 | | |
| 81.23.52.21 | testymctest.ask4.wan | 0 | | |
| 81.23.52.22 | ip-81-23-52-22.ask4internet.com | 0 | | |
| 81.23.52.23 | ip-81-23-52-23.ask4internet.com | 0 | | |
| 81.23.52.24 | ip-81-23-52-24.ask4internet.com | 0 | | |
| 81.23.52.25 | configs.ask4internet.com | 0 | | |
| 81.23.52.26 | librenms.ask4.net | 0 | | |
| 81.23.52.27 | prometheus.ask4.net | 0 | | |
| 81.23.52.28 | pdu-mon.ask4.net | 0 | | |
| 81.23.52.29 | ip-81-23-52-29.ask4internet.com | 0 | | |
| 81.23.52.30 | ip-81-23-52-30.ask4internet.com | 0 | | |
| 81.23.52.31 | ip-81-23-52-31.ask4internet.com | 0 | | |
| 81.23.52.32 | ip-81-23-52-32.ask4internet.com | 0 | | |
| 81.23.52.33 | ip-81-23-52-33.ask4internet.com | 0 | | |
| 81.23.52.34 | ip-81-23-52-34.ask4internet.com | 0 | | |
| 81.23.52.35 | ip-81-23-52-35.ask4internet.com | 0 | | |
| 81.23.52.36 | ip-81-23-52-36.ask4internet.com | 0 | | |
| 81.23.52.37 | ip-81-23-52-37.ask4internet.com | 0 | | |
| 81.23.52.38 | ip-81-23-52-38.ask4internet.com | 0 | | |
| 81.23.52.39 | 4voice-devel.ask4internet.com | 0 | | |
| 81.23.52.40 | ip-81-23-52-40.ask4internet.com | 0 | | |
| 81.23.52.41 | ip-81-23-52-41.ask4internet.com | 0 | | |
| 81.23.52.42 | ip-81-23-52-42.ask4internet.com | 0 | | |
| 81.23.52.43 | ip-81-23-52-43.ask4internet.com | 0 | | |
| 81.23.52.44 | ip-81-23-52-44.ask4internet.com | 0 | | |
| 81.23.52.45 | ip-81-23-52-45.ask4internet.com | 0 | | |
| 81.23.52.46 | ip-81-23-52-46.ask4internet.com | 0 | | |
| 81.23.52.47 | mail-store.ask4internet.com | 0 | | |
| 81.23.52.48 | ip-81-23-52-48.ask4internet.com | 0 | | |
| 81.23.52.49 | mail-out.ask4internet.com | 0 | | |
| 81.23.52.50 | ip-81-23-52-50.ask4internet.com | 0 | | |
| 81.23.52.51 | ip-81-23-52-51.ask4internet.com | 0 | | |
| 81.23.52.52 | ip-81-23-52-52.ask4internet.com | 0 | | |
| 81.23.52.53 | ip-81-23-52-53.ask4internet.com | 0 | | |
| 81.23.52.54 | ip-81-23-52-54.ask4internet.com | 0 | | |
| 81.23.52.55 | graphs.ask4internet.com | 0 | | |
| 81.23.52.56 | ip-81-23-52-56.ask4internet.com | 0 | | |
| 81.23.52.57 | uac-training.ask4.com | 0 | | |
| 81.23.52.58 | ip-81-23-52-58.ask4internet.com | 0 | | |
| 81.23.52.59 | ip-81-23-52-59.ask4internet.com | 0 | | |
| 81.23.52.60 | ip-81-23-52-60.ask4internet.com | 0 | | |
| 81.23.52.61 | ip-81-23-52-61.ask4internet.com | 0 | | |
| 81.23.52.62 | ip-81-23-52-62.ask4internet.com | 0 | | |
| 81.23.52.63 | bcast-52-0.ask4internet.com | 0 | | |
| 81.23.52.64 | subnet-52-64.ask4internet.com | 0 | | |
| 81.23.52.65 | ip-81-23-52-65.ask4internet.com | 0 | | |
| 81.23.52.66 | ip-81-23-52-66.ask4internet.com | 0 | | |
| 81.23.52.67 | bcast-52-64.ask4internet.com | 0 | | |
| 81.23.52.68 | subnet-52-68.ask4internet.com | 0 | | |
| 81.23.52.69 | gw.unificctv.dc1.ask4.net | 0 | | |
| 81.23.52.70 | unifi-nvr.dc1.ask4.net | 0 | | |
| 81.23.52.71 | bcast-52-68.ask4internet.com | 0 | | |
| 81.23.52.72 | subnet-52-72.ask4internet.com | 0 | | |
| 81.23.52.73 | ask4-office-gw.testingsuite.ask4internet.com | 0 | | |
| 81.23.52.74 | hv-gw.office.ask4internet.com | 0 | | |
| 81.23.52.75 | hv-client.office.ask4internet.com | 0 | | |
| 81.23.52.76 | ip-81-23-52-76.ask4internet.com | 0 | | |
| 81.23.52.77 | ip-81-23-52-77.ask4internet.com | 0 | | |
| 81.23.52.78 | ip-81-23-52-78.ask4internet.com | 0 | | |
| 81.23.52.79 | bcast-52-72.ask4internet.com | 0 | | |
| 81.23.52.80 | subnet-52-80.ask4internet.com | 0 | | |
| 81.23.52.81 | ask4-office-gw.testhall.ask4internet.com | 0 | | |
| 81.23.52.82 | gw.dev1.testhall.ask4.co.uk | 0 | | |
| 81.23.52.83 | gw.dev2.testhall.ask4.co.uk | 0 | | |
| 81.23.52.84 | gw.dev3.testhall.ask4.co.uk | 0 | | |
| 81.23.52.85 | gw.dev4.testhall.ask4.co.uk | 0 | | |
| 81.23.52.86 | gw.dev5.testhall.ask4.co.uk | 0 | | |
| 81.23.52.87 | gw.dev6.testhall.ask4.co.uk | 0 | | |
| 81.23.52.88 | gw.dev7.testhall.ask4.co.uk | 0 | | |
| 81.23.52.89 | gw.dev8.testhall.ask4.co.uk | 0 | | |
| 81.23.52.90 | gw.dev9.testhall.ask4.co.uk | 0 | | |
| 81.23.52.91 | gw.dev10.testhall.ask4.co.uk | 0 | | |
| 81.23.52.92 | gw.dev11.testhall.ask4.co.uk | 0 | | |
| 81.23.52.93 | gw.dev12.testhall.ask4.co.uk | 0 | | |
| 81.23.52.94 | gw.dev13.testhall.ask4.co.uk | 0 | | |
| 81.23.52.95 | bcast-52-80.ask4internet.com | 0 | | |
| 81.23.52.96 | subnet-52-96.ask4internet.com | 0 | | |
| 81.23.52.97 | ip-81-23-52-97.ask4internet.com | 0 | | |
| 81.23.52.98 | ip-81-23-52-98.ask4internet.com | 0 | | |
| 81.23.52.99 | bcast-52-96.ask4internet.com | 0 | | |
| 81.23.52.100 | subnet-52-100.ask4internet.com | 0 | | |
| 81.23.52.101 | gw.unificctv.dc1.ask4.net | 0 | | |
| 81.23.52.102 | unifi-protect-nvr.dc1.ask4.net | 0 | | |
| 81.23.52.103 | bcast-52-100.ask4internet.com | 0 | | |
| 81.23.52.104 | subnet-52-104.ask4internet.com | 0 | | |
| 81.23.52.105 | gw.hq.ask4.com | 0 | | |
| 81.23.52.106 | switches.office.ask4.com | 0 | | |
| 81.23.52.107 | guest.office.ask4.com | 0 | | |
| 81.23.52.108 | build-lan.office.ask4.com | 0 | | |
| 81.23.52.109 | provisioning.office.ask4.com | 0 | | |
| 81.23.52.110 | aps.office.ask4.com | 0 | | |
| 81.23.52.111 | bcast-52-104.ask4internet.com | 0 | | |
| 81.23.52.112 | subnet-52-112.ask4internet.com | 0 | | |
| 81.23.52.113 | gw-vlan1962.pop2.dc1.ask4.net | 0 | | |
| 81.23.52.114 | gw.parliament.12housing.ask4.co.uk | 0 | | |
| 81.23.52.115 | ip-81-23-52-115.ask4internet.com | 0 | | |
| 81.23.52.116 | customers.parliament.12housing.ask4.co.uk | 0 | | |
| 81.23.52.117 | ip-81-23-52-117.ask4internet.com | 0 | | |
| 81.23.52.118 | ip-81-23-52-118.ask4internet.com | 0 | | |
| 81.23.52.119 | bcast-52-112.ask4internet.com | 0 | | |
| 81.23.52.120 | subnet-52-120.ask4internet.com | 0 | | |
| 81.23.52.121 | gw-vlan3802.edge3.hex.ask4.net | 0 | | |
| 81.23.52.122 | gw.csv.pinnacle.ask4.co.uk | 0 | | |
| 81.23.52.123 | ip-81-23-52-123.ask4internet.com | 0 | | |
| 81.23.52.124 | customers.csv.pinnacle.ask4.co.uk | 0 | | |
| 81.23.52.125 | ip-81-23-52-125.ask4internet.com | 0 | | |
| 81.23.52.126 | ip-81-23-52-126.ask4internet.com | 0 | | |
| 81.23.52.127 | bcast-52-120.ask4internet.com | 0 | | |
| 81.23.52.128 | subnet-52-128.ask4internet.com | 0 | | |
| 81.23.52.129 | gw-vlan4.tor-11-2.pod1.dc1.ask4.net | 0 | | |
| 81.23.52.130 | ip-81-23-52-130.ask4internet.com | 0 | | |
| 81.23.52.131 | k3s-1.pi.ask4.net | 0 | | |
| 81.23.52.132 | ip-81-23-52-132.ask4internet.com | 0 | | |
| 81.23.52.133 | lb.pi.ask4.net | 0 | | |
| 81.23.52.134 | ip-81-23-52-134.ask4internet.com | 0 | | |
| 81.23.52.135 | ip-81-23-52-135.ask4internet.com | 0 | | |
| 81.23.52.136 | sentry.ask4.net | 0 | | |
| 81.23.52.137 | shared-proxy | 0 | | |
| 81.23.52.138 | keycloak.ask4.net | 0 | | |
| 81.23.52.139 | lb-1.pi.ask4.net | 0 | | |
| 81.23.52.140 | lb-2.pi.ask4.net | 0 | | |
| 81.23.52.141 | 4voice-voicemail.ask4internet.com | 0 | | |
| 81.23.52.142 | ip-81-23-52-142.ask4internet.com | 0 | | |
| 81.23.52.143 | ip-81-23-52-143.ask4internet.com | 0 | | |
| 81.23.52.144 | ip-81-23-52-144.ask4internet.com | 0 | | |
| 81.23.52.145 | ip-81-23-52-145.ask4internet.com | 0 | | |
| 81.23.52.146 | maillist-out.ask4internet.com | 0 | | |
| 81.23.52.147 | etcd-01.ask4.net | 0 | | |
| 81.23.52.148 | etcd-02.ask4.net | 0 | | |
| 81.23.52.149 | etcd-03.ask4.net | 0 | | |
| 81.23.52.150 | data-collector.ask4internet.com | 0 | | |
| 81.23.52.151 | ip-81-23-52-151.ask4internet.com | 0 | | |
| 81.23.52.152 | orderly-el7.ask4.net | 0 | | |
| 81.23.52.153 | netbeez.ask4.net | 0 | | |
| 81.23.52.154 | ip-81-23-52-154.ask4internet.com | 0 | | |
| 81.23.52.155 | ip-81-23-52-155.ask4internet.com | 0 | | |
| 81.23.52.156 | ip-81-23-52-156.ask4internet.com | 0 | | |
| 81.23.52.157 | ip-81-23-52-157.ask4internet.com | 0 | | |
| 81.23.52.158 | ip-81-23-52-158.ask4internet.com | 0 | | |
| 81.23.52.159 | bcast-52-128.ask4internet.com | 0 | | |
| 81.23.52.160 | ost-office-subnet.ost-linux.co.uk | 0 | | |
| 81.23.52.161 | test1.hq.ask4.net | 0 | | |
| 81.23.52.162 | ip-81-23-52-162.ask4internet.com | 0 | | |
| 81.23.52.163 | dougal.ask4internet.com | 0 | | |
| 81.23.52.164 | bagpuss.ost-linux.co.uk | 0 | | |
| 81.23.52.165 | penry.ask4.net | 0 | | |
| 81.23.52.166 | ip-81-23-52-166.ask4internet.com | 0 | | |
| 81.23.52.167 | ip-81-23-52-167.ask4internet.com | 0 | | |
| 81.23.52.168 | ip-81-23-52-168.ask4internet.com | 0 | | |
| 81.23.52.169 | ip-81-23-52-169.ask4internet.com | 0 | | |
| 81.23.52.170 | ip-81-23-52-170.ask4internet.com | 0 | | |
| 81.23.52.171 | ip-81-23-52-171.ask4internet.com | 0 | | |
| 81.23.52.172 | ip-81-23-52-172.ask4internet.com | 0 | | |
| 81.23.52.173 | office-devices.ost-linux.co.uk | 0 | | |
| 81.23.52.174 | ip-81-23-52-174.ask4internet.com | 0 | | |
| 81.23.52.175 | bcast-52-160.ask4internet.com | 0 | | |
| 81.23.52.176 | subnet-52-176.ask4internet.com | 0 | | |
| 81.23.52.177 | ip-81-23-52-177.ask4internet.com | 0 | | |
| 81.23.52.178 | ip-81-23-52-178.ask4internet.com | 0 | | |
| 81.23.52.179 | ip-81-23-52-179.ask4internet.com | 0 | | |
| 81.23.52.180 | ip-81-23-52-180.ask4internet.com | 0 | | |
| 81.23.52.181 | ip-81-23-52-181.ask4internet.com | 0 | | |
| 81.23.52.182 | ip-81-23-52-182.ask4internet.com | 0 | | |
| 81.23.52.183 | ip-81-23-52-183.ask4internet.com | 0 | | |
| 81.23.52.184 | ip-81-23-52-184.ask4internet.com | 0 | | |
| 81.23.52.185 | ip-81-23-52-185.ask4internet.com | 0 | | |
| 81.23.52.186 | ip-81-23-52-186.ask4internet.com | 0 | | |
| 81.23.52.187 | ip-81-23-52-187.ask4internet.com | 0 | | |
| 81.23.52.188 | ip-81-23-52-188.ask4internet.com | 0 | | |
| 81.23.52.189 | ip-81-23-52-189.ask4internet.com | 0 | | |
| 81.23.52.190 | ip-81-23-52-190.ask4internet.com | 0 | | |
| 81.23.52.191 | bcast-52-176.ask4internet.com | 0 | | |
| 81.23.52.192 | subnet-52-192.ask4internet.com | 0 | | |
| 81.23.52.193 | gw-vlan701.tor1.testlab.ask4.net | 0 | | |
| 81.23.52.194 | pfsense.testlab.ask4.net | 0 | | |
| 81.23.52.195 | proxmox.testlab.ask4.net | 0 | | |
| 81.23.52.196 | ip-81-23-52-196.ask4internet.com | 0 | | |
| 81.23.52.197 | ip-81-23-52-197.ask4internet.com | 0 | | |
| 81.23.52.198 | ip-81-23-52-198.ask4internet.com | 0 | | |
| 81.23.52.199 | bcast-52-192.ask4internet.com | 0 | | |
| 81.23.52.200 | subnet-52-200.ask4internet.com | 0 | | |
| 81.23.52.201 | pbx.office.ask4.com | 0 | | |
| 81.23.52.202 | pbx1.office.ask4.net | 0 | | |
| 81.23.52.203 | pbx2.office.ask4.net | 0 | | |
| 81.23.52.204 | ip-81-23-52-204.ask4internet.com | 0 | | |
| 81.23.52.205 | ip-81-23-52-205.ask4internet.com | 0 | | |
| 81.23.52.206 | core-sw.office.ask4.net | 0 | | |
| 81.23.52.207 | bcast-52-200.ask4internet.com | 0 | | |
| 81.23.52.208 | subnet-52-208.ask4internet.com | 0 | | |
| 81.23.52.209 | gw.build.office.ask4.com | 0 | | |
| 81.23.52.210 | gw-test1.ask4.co.uk | 0 | | |
| 81.23.52.211 | gw-test2.ask4.co.uk | 0 | | |
| 81.23.52.212 | gw-test3.ask4.co.uk | 0 | | |
| 81.23.52.213 | gw-test4.ask4.co.uk | 0 | | |
| 81.23.52.214 | gw-test5.ask4.co.uk | 0 | | |
| 81.23.52.215 | gw-test6.ask4.co.uk | 0 | | |
| 81.23.52.216 | gw-test7.ask4.co.uk | 0 | | |
| 81.23.52.217 | gw-test8.ask4.co.uk | 0 | | |
| 81.23.52.218 | 2ndline-test-mikrotik.ask4.co.uk | 0 | | |
| 81.23.52.219 | ip-81-23-52-219.ask4internet.com | 0 | | |
| 81.23.52.220 | ip-81-23-52-220.ask4internet.com | 0 | | |
| 81.23.52.221 | ip-81-23-52-221.ask4internet.com | 0 | | |
| 81.23.52.222 | 2ndline-test-mikrotik.ask4.co.uk | 0 | | |
| 81.23.52.223 | bcast-52-208.ask4internet.com | 0 | | |
| 81.23.52.224 | subnet-52-224.ask4internet.com | 0 | | |
| 81.23.52.225 | gw.tor-4.pod1.dc1.ask4.net | 0 | | |
| 81.23.52.226 | hv-staff15.ask4.net | 0 | | |
| 81.23.52.227 | hv-staff16.ask4.net | 0 | | |
| 81.23.52.228 | ip-81-23-52-228.ask4internet.com | 0 | | |
| 81.23.52.229 | ip-81-23-52-229.ask4internet.com | 0 | | |
| 81.23.52.230 | ip-81-23-52-230.ask4internet.com | 0 | | |
| 81.23.52.231 | bcast-52-224.ask4internet.com | 0 | | |
| 81.23.52.232 | subnet-52-232.ask4internet.com | 0 | | |
| 81.23.52.233 | gw-vlan45.e2.tcw-r1.ask4.net | 0 | | |
| 81.23.52.234 | gw.ionastreet.vita.ask4.co.uk | 0 | | |
| 81.23.52.235 | r1.ionastreet.vita.ask4.co.uk | 0 | | |
| 81.23.52.236 | customers.ionastreet.vita.ask4.co.uk | 0 | | |
| 81.23.52.237 | staff.ionastreet.vita.ask4.co.uk | 0 | | |
| 81.23.52.238 | bms.ionastreet.vita.ask4.co.uk | 0 | | |
| 81.23.52.239 | bcast-52-232.ask4internet.com | 0 | | |
| 81.23.52.240 | subnet-52-240.ask4internet.com | 0 | | |
| 81.23.52.241 | gw.bhp.ask4.co.uk | 0 | | |
| 81.23.52.242 | ip-81-23-52-242.ask4internet.com | 0 | | |
| 81.23.52.243 | ip-81-23-52-243.ask4internet.com | 0 | | |
| 81.23.52.244 | ip-81-23-52-244.ask4internet.com | 0 | | |
| 81.23.52.245 | ip-81-23-52-245.ask4internet.com | 0 | | |
| 81.23.52.246 | ip-81-23-52-246.ask4internet.com | 0 | | |
| 81.23.52.247 | bcast-52-240.ask4internet.com | 0 | | |
| 81.23.52.248 | ip-81-23-52-248.ask4internet.com | 0 | | |
| 81.23.52.249 | ip-81-23-52-249.ask4internet.com | 0 | | |
| 81.23.52.250 | ip-81-23-52-250.ask4internet.com | 0 | | |
| 81.23.52.251 | ip-81-23-52-251.ask4internet.com | 0 | | |
| 81.23.52.252 | subnet-52-252.ask4internet.com | 0 | | |
| 81.23.52.253 | hq-core-sw.testlab.office.ask4.net | 0 | | |
| 81.23.52.254 | gw.testlab.office.ask4.net | 0 | | |
| 81.23.52.255 | bcast-52-252.ask4internet.com | 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 81.23.52.143
traceroute to 81.23.52.143 (81.23.52.143): 64 hops max, 52 byte packets
4 *
Measurement taken from 
IPinfo ProbeNet in Sheffield, GB
IPinfo ProbeNet in Sheffield, GBOn