sequential.tech

Valid Email Server
Domain Lookup › sequential.tech

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sequential.tech
Yes
✓ Yes
Mailgun
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 08:57:50 UTC · ↺ Refresh

MX Hostnames

  • alt2.aspmx.l.google.com
  • aspmx.l.google.com
  • mxb.mailgun.org
  • mxa.mailgun.org
  • alt1.aspmx.l.google.com

MX Priorities

  • mxa.mailgun.org: 10
  • mxb.mailgun.org: 10
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1

A / AAAA Records

  • 104.21.77.54 (no PTR)
  • 172.67.204.171 (no PTR)
  • 2606:4700:3037::ac43:ccab (no PTR)
  • 2606:4700:3036::6815:4d36

Mail Server IPs

  • 34.149.236.64 ↩ 64.236.149.34.bc.googleusercontent.com
  • 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
  • 172.253.115.26 ↩ bg-in-f26.1e100.net
  • 2607:f8b0:4004:c09::1a ↩ bh-in-f26.1e100.net

SOA Record

Raw SOA etta.ns.cloudflare.com dns.cloudflare.com 2398810032 10000 2400 604800 1800
Primary NS (mname)
etta.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398810032
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

roan.ns.cloudflare.com
etta.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx ip4:206.189.216.111 include:spf.mtasv.net include:mailgun.org ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • google-site-verification=keyjXFinu5dnD_mpfbOptgu3T-OiSCHdUj50WkrQfQU
  • SPFv=spf1 a mx ip4:206.189.216.111 include:spf.mtasv.net include:mailgun.org ~all
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