Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
duda.co
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 01:21:57 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt2.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
- 99.84.160.55
- 99.84.160.86
- 99.84.160.76
- 99.84.160.40
Mail Server IPs
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 142.251.16.27 ↩ bl-in-f27.1e100.net
- 2607:f8b0:4004:c08::1a ↩ bi-in-f26.1e100.net
SOA Record
Raw SOA
ns-1474.awsdns-56.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1474.awsdns-56.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1474.awsdns-56.org
ns-1568.awsdns-04.co.uk
ns-445.awsdns-55.com
ns-744.awsdns-29.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:52.22.47.20 ip4:208.117.49.186 include:_spf.google.com include:stspg-customer.com include:_spf.psm.knowbe4.com include:mail.zendesk.com include:4790854.spf02.hubspotemail.net include:sendgrid.net include:_spf.hubspotemail.net -all
📊 DNS lookups: 7/10
✓ 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
✓ 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
16 records- status-page-domain-verification=lstjwqhv2gbr
- google-site-verification=nPavvkx9i6S9oGhylZ8inYRN4bDIS0p748YilSvlj4w
- openai-domain-verification=dv-mdLZw7CLs9EgWe7Tzkt80lEl
- AAEF09E580
- mixpanel-domain-verify=c3a4f29f-b45e-4a92-a6af-0cca9fd87a69
- google-site-verification=NpIbB75zjimCw_iK9BY-_TQnczFmcHEZF_1l95mfpso
- stripe-verification=3B7D2EAD24A5F2F75F7711759281AA33BEBD93BAC37A0FDED0EC4E21983D31D6
- lovable_verification=workspace_01k4b71h56fdfsk5f7r7zpkrx8
- google-site-verification=EUwvv-pmhzpNflLc7P3l8V5b8KQALuLiEn7Ax-OLXbU
- notion-domain-verification=78D0mRNW2aDtOlERJu6QLk2Us3h5xRZuGkLgrRze2fB
- google-site-verification=dtp-y5pT0XTT-duDccQa3n_kkF2CgyMBJjUo2TcPWBI
- docusign=5e08ffb5-3c7a-46f3-bc05-a026e297468b
- cursor-domain-verification-1wvx7a=E5i3bu8k4YqL7XLrYke5MLP3c
- apple-domain-verification=Ocsfkpx30EkMH3dn
- google-site-verification=oZfDc_NsguS_0xksfyGhKnWQzbOG9FIxJ6S0MSrHTjo
- SPFv=spf1 ip4:52.22.47.20 ip4:208.117.49.186 include:_spf.google.com include:stspg-customer.com include:_spf.psm.knowbe4.com include:mail.zendesk.com include:4790854.spf02.hubspotemail.net include:sendgrid.net include:_spf.hubspotemail.net -all
Full email verification for duda.co
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