DNSRegistration lookup
THE RECORDS BEHIND THE NAME

DNS lookup.

Explore resource records, mail routing and reverse DNS.

Public IPs automatically use PTR. Common records queries A, AAAA, MX, NS, CNAME, TXT, SOA and CAA separately.

DNS

secureserver-net.mail.protection.outlook.com

8 answer records · Partial
Retrieved · 2026-09-21T15:00:49+00:00View JSON
Registration / WHOIS →
CNAME: resolver returned SERVFAIL. This is a DNS error, not an empty record set.
TXT: resolver returned SERVFAIL. This is a DNS error, not an empty record set.
ANOERRORAD no
AAAANOERRORAD no
MXNOERROR · no answersAD no
NSNOERROR · no answersAD no
CNAMESERVFAILAD no
TXTSERVFAILAD no
SOANOERROR · no answersAD no
CAANOERROR · no answersAD no

AD indicates that the resolver reports DNSSEC-validated data. “AD no” can also mean the zone is unsigned. NXDOMAIN is a DNS result, not a domain-availability check.

TypeNameTTL · secondsValueLook up
Asecureserver-net.mail.protection.outlook.com1052.101.41.122IP WHOIS →
Asecureserver-net.mail.protection.outlook.com1052.101.41.180IP WHOIS →
Asecureserver-net.mail.protection.outlook.com1052.101.41.183IP WHOIS →
Asecureserver-net.mail.protection.outlook.com1052.101.60.182IP WHOIS →
AAAAsecureserver-net.mail.protection.outlook.com102a01:111:f403:c91d::bIP WHOIS →
AAAAsecureserver-net.mail.protection.outlook.com102a01:111:f403:f90b::IP WHOIS →
AAAAsecureserver-net.mail.protection.outlook.com102a01:111:f403:f908::1IP WHOIS →
AAAAsecureserver-net.mail.protection.outlook.com102a01:111:f403:f90a::IP WHOIS →
Authority records · 1
TypeNameTTL · secondsValueLook up
SOAmail.protection.outlook.com3600ns1-proddns.glbdns.o365filtering.com. hostmaster.o365filtering.com. 2013010801 3600 600 86400 3600—

Results reflect the public DNS view and recursive caching; they may differ from your local network. TXT strings retain their DNS quoting. Common records does not enumerate every name or record in a zone.