go
mx1.sjofartsverket.se has one IP number , which also has a corresponding reverse pointer. amrcc.se, seatime.se, soundvts.org, ns.seatime.se, sjofartsverket.se and at least one other host use this as a mailserver. sjofartsverket.se is a domain controlled by four nameservers. Two of them are on the same IP network. Incoming mail for sjofartsverket.se is handled by two mailservers at sjofartsverket.se themselves. They are on the same IP network. sjofartsverket.se has one IP number , but no corresponding reverse pointer. mx1.sjofartsverket.se is hosted on a server in Sweden.

mx1.sjofartsverket.se
a records
 
+ 161.54.134.231 161.54.0.0/16 AS3292 -
+ --- -

*.sjofartsverket.se
mx records
mx2.sjofartsverket.se
+ 161.54.134.232 161.54.0.0/16 AS3292 -
+ --- -
mx1.sjofartsverket.se
+ 161.54.134.231 161.54.0.0/16 AS3292 -

sjofartsverket.se
a records
 
+ 161.54.134.253 161.54.0.0/16 AS3292 smartgate.sjofartsverket.se
+ --- smartgate.sjofartsverket.se
+ --- gateway.sjofartsverket.se
ns-soa records
ns.sjofartsverket.se
+ 161.54.134.253 161.54.0.0/16 AS3292 smartgate.sjofartsverket.se
+ --- smartgate.sjofartsverket.se
+ --- gateway.sjofartsverket.se
ns records
a.dns.songnetworks.se
+ 213.50.29.190 213.50.0.0/16 AS3292 -
+ --- -
b.dns.songnetworks.se
+ 213.50.29.195 213.50.0.0/16 AS3292 -
c.dns.songnetworks.se
+ 195.10.143.3 195.10.128.0/18 AS3292 -
ns.sjofartsverket.se
+ 161.54.134.253 161.54.0.0/16 AS3292 smartgate.sjofartsverket.se
+ --- smartgate.sjofartsverket.se
+ --- gateway.sjofartsverket.se
mx records
mx2.sjofartsverket.se
+ 161.54.134.232 161.54.0.0/16 AS3292 -
+ --- -
mx1.sjofartsverket.se
+ 161.54.134.231 161.54.0.0/16 AS3292 -
ip numbers of host
161.54.134.231
ptrs of ip numbers
mx1.sjofartsverket.se
ip numbers using ptr to this host
161.54.134.231
domains using this as mailserver
*.amrcc.se
*.seatime.se
*.sjofartsverket.se
*.soundvts.org
amrcc.se
ns.seatime.se
portal.sjofartsverket.se
seatime.se
sjofartsverket.se
soundvts.org