semantic-web.at

Valid Email Server
Domain Lookup › semantic-web.at
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
semantic-web.at
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-10-30 02:30:43 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

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

MX Priorities

  • alt2.aspmx.l.google.com: 20
  • aspmx2.googlemail.com: 30
  • aspmx3.googlemail.com: 30
  • aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 20

A / AAAA Records

  • 91.209.89.5 (no PTR)

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 192.178.234.26 ↩ ncsclj-in-f26.1e100.net
  • 2800:3f0:4003:c14::1b (no PTR)
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 172.253.139.26 ↩ yuiadsk-in-f26.1e100.net
  • 2607:f8b0:4004:c0b::1b ↩ bj-in-f27.1e100.net
  • 2800:3f0:4003:c14::1a (no PTR)

SOA Record

Raw SOA ns-1761.awsdns-28.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1761.awsdns-28.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-384.awsdns-48.com
ns-968.awsdns-57.net
ns-1472.awsdns-56.org
ns-1761.awsdns-28.co.uk

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com mx ip4:212.186.178.202/32 ip4:146.255.56.70/32 ip4:37.252.250.210/32 ip4:91.209.89.0/24 ip4:188.172.246.144/27 ip4:3.121.37.53/32 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; 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: 522 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

5 records
  • google-site-verification=SYjBzlxwmvg3H2a4omCG5y4aAZq063-u6iaH99lgbGk
  • google-site-verification=fziJGMKI2497gXZDYV2Np3wMkJbwBWioHPpvW5gXtDM
  • google-site-verification=gtZlPZJs4xLvyi5vMwNvtqcA3hZfjP97Fgo_FicjMwM
  • SPFv=spf1 include:_spf.google.com mx ip4:212.186.178.202/32 ip4:146.255.56.70/32 ip4:37.252.250.210/32 ip4:91.209.89.0/24 ip4:188.172.246.144/27 ip4:3.121.37.53/32 ~all
  • google-site-verification=LhA47T6Gs1Kcj39VhngItiWNWpTZbGTUnR9xe4y8SaE
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 semantic-web.at

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

No credit card required
Get 1,000 Free Credits