Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
roundhill.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 21:31:57 UTC · ↺ Refresh
MX Hostnames
- roundhill-com.mail.protection.outlook.com
MX Priorities
- roundhill-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.18.160.83 (no PTR)
Mail Server IPs
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
SOA Record
Raw SOA
ns61.worldnic.com namehost.worldnic.com 126031115 10800 3600 604800 3600
Primary NS (mname)
ns61.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126031115
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns62.worldnic.com
ns61.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:212.27.79.46/32 include:spf.protection.outlook.com include:authsmtp.com include:sendgrid.net include:spf.zohomail360.com include:_spf.travelclick.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SPFv=spf1 ip4:212.27.79.46/32 include:spf.protection.outlook.com include:authsmtp.com include:sendgrid.net include:spf.zohomail360.com include:_spf.travelclick.com -all
- google-site-verification=qZcs9Tz8Uw49cxjgYU_EJVIU5cEj28IGSOYZY3FhF80
- google-site-verification=zh9eANbx1WiLNDvAm2MdvZuXQiJXVRQ6gJZMKin22dw
- facebook-domain-verification=du0e6vb50cqld5klsh557lmgoemhk1
- ca3-8027a6a0558f402fb19f0946ef2027b5
- include:authsmtp.com -all
Full email verification for roundhill.com
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