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.
Querying DNS records…
DNS
8 answer records · Partialcomsource-cz.mail.protection.outlook.com
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
CNAMENOERROR · no answersAD 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.
| Type | Name | TTL · seconds | Value | Look up |
|---|---|---|---|---|
| A | comsource-cz.mail.protection.outlook.com | 10 | 52.101.185.24 | IP WHOIS → |
| A | comsource-cz.mail.protection.outlook.com | 10 | 52.101.73.123 | IP WHOIS → |
| A | comsource-cz.mail.protection.outlook.com | 10 | 52.101.73.120 | IP WHOIS → |
| A | comsource-cz.mail.protection.outlook.com | 10 | 52.101.209.31 | IP WHOIS → |
| AAAA | comsource-cz.mail.protection.outlook.com | 10 | 2a01:111:f403:c967::a | IP WHOIS → |
| AAAA | comsource-cz.mail.protection.outlook.com | 10 | 2a01:111:f403:ca48::12 | IP WHOIS → |
| AAAA | comsource-cz.mail.protection.outlook.com | 10 | 2a01:111:f403:ca04::c | IP WHOIS → |
| AAAA | comsource-cz.mail.protection.outlook.com | 10 | 2a01:111:f403:ca3c::8 | IP WHOIS → |
Authority records · 2
| Type | Name | TTL · seconds | Value | Look up |
|---|---|---|---|---|
| SOA | mail.protection.outlook.com | 3600 | ns1-proddns.glbdns.o365filtering.com. hostmaster.o365filtering.com. 2013010801 3600 600 86400 3600 | — |
| SOA | mail.protection.outlook.com | 300 | ns1-86.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 300 | — |
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.