Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
us-concrete.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-06-03 07:44:16 UTC · ↺ Refresh
MX Hostnames
- alt3.aspmx.l.google.com
- smptrelay.vul.com
- alt1.aspmx.l.google.com
- smptrelay01.vul.com
- aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt2.aspmx.l.google.com
- bhmsmptrelay.vul.com
MX Priorities
- alt1.aspmx.l.google.com: 5
- smptrelay01.vul.com: 10
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- smptrelay.vul.com: 10
- aspmx.l.google.com: 1
- bhmsmptrelay.vul.com: 30
- alt2.aspmx.l.google.com: 5
A / AAAA Records
- 205.235.120.15 (no PTR)
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
SOA Record
Raw SOA
ns0.vul.com security.vul.com 2009010155 43200 3600 1209600 300
Primary NS (mname)
ns0.vul.com
Admin Email (rname)
security@vul.com
Serial
2009010155
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns3.vul.com
ns0.vul.com
ns1.vul.com
ns2.vul.com
ns4.vul.com
SPF Record
✓ Strict (-all)
v=spf1 a:www.vulcanmaterials.com include:vul.com include:_spf.google.com include:sendgrid.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._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
6 records- google-site-verification=XFEgGpaEAp3Tz-cBW0uoyDj-fL_IhEPUBg0uemUrjoI
- SPFv=spf1 a:www.vulcanmaterials.com include:vul.com include:_spf.google.com include:sendgrid.net -all
- SPFv=spf1 include:vul.com include:_spf.google.com include:sendgrid.net include:amazonses.com ip4:13.59.123.212 ip4:209.210.34.192/26 ip4:199.30.234.56/29 ip4:74.203.184.208/30 ip4:199.30.234.64/26 ip4:199.30.234.192/27 ip4:74.203.184.32/27 include:spf.protection.outlook.com include:us._netblocks.mimecast.com -all
- google-gws-recovery-domain-verification=44651381
- box-domain-verification=5c76420042d7294ee7c9f3e9b65c1fb3b424d20f8f36a2f407b9a0a129f2301e
- box-domain-verification=f7cdb92f418991ecc4ee1c0703024e92367932acfff3919cd1b9c9cb8b74f568
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 · Customize →
See demo & docs
Deep verification
Full email verification for us-concrete.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits