CF1761450245872-tsm20251024211356

WWW.ROBTEX.COM - 81.23.52.21

Search for IP or hostnames:

81.23.52.21 checked at 2025-10-26T03:44:05.856Z 282ms 12/12/12 100% R:11

PTRs and A-records

PTRtestymctest.ask4.wan
Amail.ask4.net
A81.23.52.21

RBLS
81.23.48.0/20

AS41230

shared on network route

ip-81-23-52-6.ask4internet.com
mail.certus-tech.com
auth2.dns.ask4.com
ip-81-23-63-2.ask4internet.com
ip-81-23-52-108.ask4internet.com
ip-81-23-52-24.ask4internet.com
specialforgedproducts.com
sip2.4voice.ask4.net
ip-81-23-50-229.ask4internet.com
4student.com
ip-81-23-54-27.ask4internet.com
ns2.ask4internet.com
locus.reidhosting.co.uk
ip-81-23-54-164.ask4internet.com
ip-81-23-53-180.ask4internet.com
www.pacesd.co.uk
certus-tech.com
a-p03r08-pdu.a4s.busi.ask4.co.uk
pbx.office.ask4.com
ip-81-23-48-238.ask4internet.com
ip-81-23-59-57.ask4internet.com
ip-81-23-57-181.ask4internet.com
mail1.ipl-ltd.com
exchange.suttonmcgrathhartley.co.uk
customers.boatmans.kexgill.ask4.co.uk
ip-81-23-54-178.ask4internet.com
hv-staff16.ask4.net
ip-81-23-48-189.ask4internet.com
ip-81-23-48-79.ask4internet.com
subversionforum.net
ns1.home-lan.co.uk
ip-81-23-61-29.ask4internet.com
www.ngrl.org.uk
configs.ask4.net
mail.seamsltd.co.uk
pacesd.co.uk
pc-85.office.ask4.com
ip-81-23-53-243.ask4internet.com
ip-81-23-55-75.ask4internet.com
sonicwall-wan2.highlanderuk.net
ip-81-23-58-253.ask4internet.com
ip-81-23-59-167.ask4internet.com
staff.wilmslow.opal.ask4.co.uk
gw.csv.pinnacle.ask4.co.uk
ip-81-23-56-9.ask4internet.com
ip-81-23-49-126.ask4internet.com
ip-81-23-54-173.ask4internet.com
ip-81-23-53-186.ask4internet.com
ip-81-23-54-252.ask4internet.com
ip-81-23-58-248.ask4internet.com
mail.seamsltd.com
ip-81-23-54-136.ask4internet.com
ip-81-23-54-139.ask4internet.com
dc1-pdu2.birchhow.busi.ask4.co.uk
dc1-pdu1.westfield-health.busi.ask4.co.uk
ip-81-23-60-97.ask4internet.com
ip-81-23-54-169.ask4internet.com
edge1.lymeregis.clv.ask4.net
ns1.ost-linux.co.uk
ip-81-23-54-125.ask4internet.com
ip-81-23-48-120.ask4internet.com
e2.hex.ask4.net
ip-81-23-59-173.ask4internet.com
ip-81-23-56-15.ask4internet.com
subversionforum.org
dc1-pdu1.tribepad.busi.ask4.co.uk
gw.sheftechpark.busi.ask4.co.uk
ip-81-23-51-39.ask4internet.com
ip-81-23-54-174.ask4internet.com
pc-72.office.ask4.com
dc1-pdu2.westfield-health.busi.ask4.co.uk
confluence.ask4.net
ip-81-23-52-86.ask4internet.com
dns1.certus-tech.com
dicast.co.uk
ip-81-23-54-251.ask4internet.com
ip-81-23-55-137.ask4internet.com
gw.thorncliffe.busi.ask4.co.uk
ip-81-23-52-10.ask4internet.com
ns1.reidhosting.co.uk
e1.thn.ask4.net
gw.shef11.testhall.ask4.co.uk
ip-81-23-54-156.ask4internet.com
ip-81-23-52-158.ask4internet.com
saru.ask4.com
customers.hessian.crm.ask4.co.uk
4voice-fe1.ask4.net
textconnect-bridge.ask4.net
ldap-2.ask4.net
ip-81-23-53-242.ask4internet.com
ip-81-23-52-190.ask4internet.com
gateway1.birchenallhowden.com
ceqas.net
ip-81-23-50-205.ask4internet.com
ip-81-23-54-250.ask4internet.com
syslog-server.ask4.net
ip-81-23-52-183.ask4internet.com
ip-81-23-58-61.ask4internet.com
ns1.ask4.net
ip-81-23-48-230.ask4internet.com
ip-81-23-52-34.ask4internet.com
ip-81-23-60-137.ask4internet.com
ip-81-23-52-181.ask4internet.com
gw.longstreet.vic.ask4.co.uk
gw.centralpoint.capitol.ask4.co.uk
ip-81-23-54-141.ask4internet.com
office.ask4.com
customers.exchangecourt.host.ask4.co.uk
towersey.ost-linux.co.uk
ip-81-23-57-254.ask4internet.com
gw.globeworks.nido.ask4.co.uk
ip-81-23-56-155.ask4internet.com
nagios-devel.ask4.net
gw.carters.crm.ask4.co.uk
4voice-voicemail.ask4.net
ip-81-23-53-216.ask4internet.com
ip-81-23-54-163.ask4internet.com
benreid.net
ip-81-23-54-26.ask4internet.com
ip-81-23-48-241.ask4internet.com
mail.ask4.net
sentry.ask4.net
ip-81-23-54-237.ask4internet.com
mail-relay.ask4.com
seamsltd.co.uk
ip-81-23-52-25.ask4internet.com
seamsltd.com
ip-81-23-54-78.ask4internet.com
central-hac2.ask4.net
ip-81-23-52-106.ask4internet.com
reports.ask4.net
ip-81-23-57-223.ask4internet.com
ip-81-23-56-230.ask4internet.com
ns2.home-lan.co.uk
ip-81-23-59-176.ask4internet.com
subversionforum.com
ip-81-23-50-194.ask4internet.com
ip-81-23-58-3.ask4internet.com
pfsense.testlab.ask4.net
ip-81-23-63-61.ask4internet.com
edge1.circlesquare.vita.ask4.net
ip-81-23-54-166.ask4internet.com
ip-81-23-52-78.ask4internet.com
ns2.ask4.net
ip-81-23-52-98.ask4internet.com
ip-81-23-57-165.ask4internet.com
ip-81-23-48-235.ask4internet.com
ip-81-23-59-51.ask4internet.com
ip-81-23-59-58.ask4internet.com
ip-81-23-63-26.ask4internet.com
remote.knowsley.com
ip-81-23-48-27.ask4internet.com
edge1.valentine.lincoln.ask4.net
ip-81-23-54-238.ask4internet.com
ip-81-23-56-36.ask4internet.com
saturn.home-lan.co.uk
unifi-protect-nvr.dc1.ask4.net

shared on AS number

pc-72.office.ask4.com
dc1-pdu2.westfield-health.busi.ask4.co.uk
soccersms.com
confluence.ask4.net
e-nis.com
ip-81-23-52-86.ask4internet.com
ip-78-109-178-210.ask4internet.com
dns1.certus-tech.com
www.sliqtools.co.uk
dicast.co.uk
ip-81-23-54-251.ask4internet.com
freetell.co.uk
www.robinbell.com
ip-78-109-187-52.ask4internet.com
colouredbags.com
ip-78-109-190-130.ask4internet.com
ip-78-109-183-245.ask4internet.com
ip-81-23-55-137.ask4internet.com
enginious.co.uk
andrewmacleod.com
fw1.d.pipeten.co.uk
gw.thorncliffe.busi.ask4.co.uk
dwsolutions.net
dunblanecentre.co.uk
www.ra-telecom.co.uk
ip-81-23-52-10.ask4internet.com
gw.pipeten.co.uk
ip-78-109-177-182.ask4internet.com
ip-78-109-185-166.ask4internet.com
ip-78-109-183-138.ask4internet.com
customers.nixon.uol.ask4.co.uk
ns1.reidhosting.co.uk
www.tanside.co.uk
anfieldagency.co.uk
highcrestcare.com
bustedmedia.com
drelay.pipeten.co.uk
e1.thn.ask4.net
gw.shef11.testhall.ask4.co.uk
nuti.me
ns2.cnxsw.co.uk
spaceinnovation.co.uk
ip-81-23-54-156.ask4internet.com
mail.fosb.com
mc24.purelymx.com
ip-81-23-52-158.ask4internet.com
saru.ask4.com
customers.hessian.crm.ask4.co.uk
ip-78-109-183-238.ask4internet.com
youthconnexions.org
fayregame.co.uk
mamasandleonies.co.uk
ip-78-109-178-90.ask4internet.com
www.celera.co.uk
www.biggrassfield.com
staff.shackleton.uob.ask4.co.uk
ip-78-109-177-147.ask4internet.com
www.ychertfordshire.org
web3.pipeten.co.uk
hostmaster.firsthosted.co.uk
4voice-fe1.ask4.net
textconnect-bridge.ask4.net
ip-78-109-185-110.ask4internet.com
ldap-2.ask4.net
ip-81-23-53-242.ask4internet.com
ndwa.co.uk
gw-data-72.central-staff.ask4.co.uk
ip-81-23-52-190.ask4internet.com
webmail-el7.ask4.net
mytimegate.com
pfifm.com
discountlaundrybags.com
gateway1.birchenallhowden.com
ip-78-109-177-180.ask4internet.com
ceqas.net
ip-78-109-191-213.ask4internet.com
ns3.ask4.net
ip-81-23-50-205.ask4internet.com
taab.co.uk
ip-81-23-54-250.ask4internet.com
syslog-server.ask4.net
ip-81-23-52-183.ask4internet.com
staff.globe.carlton.ask4.co.uk
ip-78-109-183-140.ask4internet.com
ip-78-109-177-105.ask4internet.com
mail-relay-03.ask4.net
pteg.net
ip-81-23-58-61.ask4internet.com
es-3-devel.ask4.net
nis-it.co.uk
ip-78-109-183-174.ask4internet.com
ns2.bustedmedia.com
www.pettrac.co.uk
ns1.ask4.net
rmacfarlane.co.uk
hive.giraffesolutions.co.uk
customers.hopestreet.host.ask4.co.uk
ip-78-109-187-214.ask4internet.com
confluence-db-2.dev.ask4.net
halam.com
🇬🇧 ASK4 Ltd
Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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Jmykmsb CF johedugfp 2025-10-26