Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
diffco.us
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 12:45:20 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt4.aspmx.l.google.com
- aspmx.l.google.com
MX Priorities
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
A / AAAA Records
- 172.67.74.75
- 104.26.8.137
- 104.26.9.137
- 2606:4700:20::681a:889
- 2606:4700:20::681a:989
- 2606:4700:20::ac43:4a4b
Mail Server IPs
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 172.253.63.27 ↩ bi-in-f27.1e100.net
- 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
SOA Record
Raw SOA
eva.ns.cloudflare.com dns.cloudflare.com 2399350653 10000 2400 604800 1800
Primary NS (mname)
eva.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399350653
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
eva.ns.cloudflare.com
rudy.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:4033687.spf06.hubspotemail.net include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=none; pct=100; ri=86400; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- MS=49B882023046A2623F78BC11F0A37F6F3550C348
- apple-domain-verification=4BhwKmxHVD6F0jm3P
- atlassian-domain-verification=Jj17WwDXkhOfMlwbMQtQPzPya39V9sItaknR5zveIQiSYCBu6GeeKFPEjAmHnZyz
- cursor-domain-verification-7qddp8=psMllEEPFefH6sy5cNrnx6HKW
- google-site-verification=XsqL06fOx2Cka5RgOHfvgmKSHi2pJSXE8WDIL6VbplI
- linkedin-site-verification=a2faaf5e-e7aa-4708-af65-56e7474ac4f8
- notion-domain-verification=dNjYSHXwbkipJw7h9jkn26xFdTbgF85U5KRxIQx3GwH
- openai-domain-verification=dv-RrhvD7s9rycMdVAi86dL9A8a
- rippling-domain-verification=ebe8b9895d140963
- sophos-domain-verification=763d6a921f316b0f902bb64a0585721e214727dc
- stripe-verification=42466416fa41c057c787b1f7fd85bf1c77f3c246a7c3f682fb41a85aca52cfbb
- SPFv=spf1 include:_spf.google.com include:4033687.spf06.hubspotemail.net include:sendgrid.net -all
Full email verification for diffco.us
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