onesubsea.com

Valid Email Server
Domain Lookup › onesubsea.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
onesubsea.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-29 04:43:51 UTC · ↺ Refresh

MX Hostnames

  • mxa-00198502.gslb.pphosted.com
  • mxb-00198502.gslb.pphosted.com

MX Priorities

  • mxb-00198502.gslb.pphosted.com: 10
  • mxa-00198502.gslb.pphosted.com: 10

A / AAAA Records

  • 20.23.79.56 (no PTR)

Mail Server IPs

  • 185.132.180.7 ↩ mx07-00198502.pphosted.com
  • 91.207.212.229 ↩ mx08-00198502.pphosted.com

SOA Record

Raw SOA nl0123vsmipam03.dns.slb.com hostmaster.slb.com 275 14400 3600 2419200 900
Primary NS (mname)
nl0123vsmipam03.dns.slb.com
Admin Email (rname)
hostmaster@slb.com
Serial
275
Refresh
14400s
Retry
3600s
Expire
2419200s
Minimum TTL
900s

Nameservers (NS)

dns1.slb.net
ns74.ultradns2.com
ns74.ultradns2.org
dns0.slb.com
dns0.slb.net
dns1.slb.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.slb.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

15 records
  • docusign=3ef835a2-ea49-496b-9620-d8c432ae5f1c
  • docusign=f2dceec2-d9cc-4586-b967-7cefc31a6bd3
  • v=msv1 t=ACA9A28B-B449-4998-9451-1485E75B1578
  • Foxit-domain-verification=90b03bccea900ccf3be052b1136ebf2d
  • dtm-domain-verification=TPdM_dKOYXubHW8yguLVty8chsnXLmFoMhO8Pzm6m3Q
  • MK8UkEGhOVZMA6hzvvAOPV1WlmUbXFskiuTl9ETa3ifcrfkPwYyTrR+kpNnZa+/mplCT+1JrarntclXH/LlPmw==
  • postman-domain-verification=a7a00b830044e34653b09c96fd9f48bdc68c50b45f5bc4812578664fb4ba379485dced9cfff84f907099e05d2ab9e29af56542adb4ad8a970a64ac6558bf92be
  • MS=ms11429709
  • MS=ms41012391
  • MS=ms52102796
  • SPFv=spf1 include:spf.slb.com -all
  • _3sszoqfd6o4xgc6p08gcms3d66b8zes
  • _n8rizyxa2b8nx0hvh0wreskti2tf193
  • _x0r4g7p3bdq2d4mu3m4p6dxpjeruwnw
  • apple-domain-verification=JQXC1mOWPNUQLypY
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for onesubsea.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits