Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
biostrap.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 23:28:14 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
MX Priorities
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
A / AAAA Records
- 162.159.135.42
- 162.159.134.42
- 2606:4700:7::a29f:872a
- 2606:4700:7::a29f:862a
Mail Server IPs
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 142.250.31.27 ↩ bj-in-f27.1e100.net
- 2607:f8b0:4004:c1f::1b ↩ pd-in-f27.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
SOA Record
Raw SOA
hank.ns.cloudflare.com dns.cloudflare.com 2398777012 10000 2400 604800 1800
Primary NS (mname)
hank.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398777012
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
violet.ns.cloudflare.com
hank.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:spf.zoho.com include:48117836.spf02.hubspotemail.net ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
google._domainkey
k1._domainkey
✓ Public key: 392 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
7 records- SPFv=spf1 include:_spf.google.com include:spf.zoho.com include:48117836.spf02.hubspotemail.net ~all
- ZOOM_verify_KRfUtD922dQspsfYupJctC
- ca3-16d0c3a8629440d29337719535ec70be
- facebook-domain-verification=v1zrs2mrph21v7urop2vbe1bnnr3rl
- google-site-verification=ZjdE45r66moCvIG-J2lFP4BU4r8_mpe-1QW3Z3NovZU
- google-site-verification=at8pjqOj2KUf8v0kfOqL8DZbY-WxPUzboUc2B4sxntE
- status-page-domain-verification=ysj3rlwfp19s
Full email verification for biostrap.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits