Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tcusd.net
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 23:11:54 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- alt3.aspmx.l.google.com
- us-esec-02.heimdalsecurity.com
- us-esec-01.heimdalsecurity.com
- alt4.aspmx.l.google.com
MX Priorities
- alt3.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 5
- alt1.aspmx.l.google.com: 5
- alt4.aspmx.l.google.com: 10
- us-esec-02.heimdalsecurity.com: 1
- us-esec-01.heimdalsecurity.com: 0
A / AAAA Records
- 18.233.124.95
- 54.221.139.169
Mail Server IPs
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 142.251.179.27 ↩ pd-in-f27.1e100.net
- 2607:f8b0:4004:c23::1b ↩ yuiadrs-in-f27.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
SOA Record
Raw SOA
dns101.register.com root.register.com 125100117 10800 3600 604800 3600
Primary NS (mname)
dns101.register.com
Admin Email (rname)
root@register.com
Serial
125100117
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns102.register.com
dns101.register.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf-esec-us.heimdalsecurity.com include:_spf.google.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- SPFv=spf1 include:spf-esec-us.heimdalsecurity.com include:_spf.google.com include:spf.protection.outlook.com -all
- 6q49qaoor3s7njeakbh7sh66v4
- google-site-verification=9v7VvNAxgVt3GpWqvCEqJ-wzsLPyX2EX_ZR1u9qquZE
- 1password-site-verification=KQJLJRT4HFHFDDQ3ALDHYGZF7M
- google-site-verification=iROkqHMGjAlF3QhBncG4YKodCMzLvoQZlnhnQ_zmx2g
- google-site-verification=Zm0VGZ45Hhnf1mO1cXfnG3IZd74lYLWjOuzp7wDIXAw
- adobe-idp-site-verification=443d6ca6d5ba08d5b31a07d4862f98b055f16ff99e3b20372e2d8e7a6999cb2b
- google-site-verification=CcWrm_GrrOaPfdAdWiHGYH_ipeRh6a3AG3w-rw4Vfn0
- google-site-verification=i0brPeK4Y4lp-xbq-DfWnmyd_2PyIjq_FBY_JeMK12M
Full email verification for tcusd.net
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