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

markmonitor-com.mail.protection.outlook.com

8 answer records · Partial
Cloudflare 1.1.1.1 · HTTPS2026-09-20T23:22:06+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
Amarkmonitor-com.mail.protection.outlook.com1052.101.99.2IP WHOIS →
Amarkmonitor-com.mail.protection.outlook.com1052.101.89.1IP WHOIS →
Amarkmonitor-com.mail.protection.outlook.com1052.101.89.2IP WHOIS →
Amarkmonitor-com.mail.protection.outlook.com1052.101.89.0IP WHOIS →
AAAAmarkmonitor-com.mail.protection.outlook.com102a01:111:f403:ca0b::2IP WHOIS →
AAAAmarkmonitor-com.mail.protection.outlook.com102a01:111:f403:ca1a::IP WHOIS →
AAAAmarkmonitor-com.mail.protection.outlook.com102a01:111:f403:ca0b::IP WHOIS →
AAAAmarkmonitor-com.mail.protection.outlook.com102a01:111:f403:ca1a::1IP WHOIS →
Authority records · 1
TypeNameTTL · secondsValueLook up
SOAmail.protection.outlook.com3600ns1-proddns.glbdns.o365filtering.com. hostmaster.o365filtering.com. 2013010801 3600 600 86400 3600—

Queries are sent to Cloudflare 1.1.1.1 over HTTPS. Results reflect its public DNS view and cache; 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.