checkoff.com

Valid Email Server
Domain Lookup › checkoff.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
checkoff.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 14:46:35 UTC · ↺ Refresh

MX Hostnames

  • alt2.aspmx.l.google.com
  • aspmx2.googlemail.com
  • aspmx.l.google.com
  • aspmx3.googlemail.com
  • alt1.aspmx.l.google.com

MX Priorities

  • aspmx3.googlemail.com: 10
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • aspmx2.googlemail.com: 10

A / AAAA Records

  • 198.185.159.145 (no PTR)
  • 198.49.23.145 (no PTR)
  • 198.185.159.144
  • 198.49.23.144

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 192.178.218.26 ↩ yuiadtq-in-f26.1e100.net
  • 2607:f8b0:4004:c09::1b ↩ bh-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)

SOA Record

Raw SOA sara.ns.cloudflare.com dns.cloudflare.com 2395340416 10000 2400 604800 1800
Primary NS (mname)
sara.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2395340416
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

sara.ns.cloudflare.com
seth.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx include:spf.mtasv.net include:_spf.google.com include:mailgun.org ~all
📊 DNS lookups: 5/10
~ 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

5 records
  • SPFv=spf1 a mx include:spf.mtasv.net include:_spf.google.com include:mailgun.org ~all
  • workplace-domain-verification=c77555fe-172a-4d20-b102-0466d32d52f0
  • MS=3278F7FC5AC57AB5E817C6B170C7749A8137ECD1
  • brave-ledger-verification=1956fbb1a3056fd9ca94697b78f819a28339c0751721b7e9860b575e3d2f1098
  • facebook-domain-verification=bjytjiuu3ol7hza2g8ku7c57ylz55a
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