Domain Overview
DNS: โ 2mo ago
Checker: โ 2mo ago
ruhr-reggae-summer.de
Yes
โ Yes
Unknown
No
No
โ Yes
No
No
Checked via [email protected]
ยท 2026-03-28 17:48:43 UTC ยท โบ Refresh
MX Hostnames
- mail.u-concert.de
MX Priorities
- mail.u-concert.de: 10
A / AAAA Records
- 94.130.8.226 โฉ u2.u-concert.de
- 2a01:4f8:10b:d1f::2 โฉ u2.u-concert.de
Mail Server IPs
- 88.99.57.136 โฉ u1.u-concert.de
- 2a01:4f8:10a:9d7::2 โฉ u1.u-concert.de
SOA Record
Raw SOA
ns1.first-ns.de domains.u-concert.de 2024070802 10800 3600 1209600 10800
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
domains@u-concert.de
Serial
2024070802
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
ns1.first-ns.de
robotns2.second-ns.de
robotns3.second-ns.com
SPF Record
โ Strict (-all)
v=spf1 a mx ip6:2a01:4f8:10b:d1f::2 ip6:2a01:4f8:10a:9d7::2 ip4:88.99.57.136 ip4:94.130.8.226 -all
๐ DNS lookups: 2/10
โ Hard fail (-all) โ strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine โ good protection (failing mail goes to spam)
๐ SPF alignment: Strict
ยท DKIM alignment: Strict
โ No aggregate reports (rua= not set)
DKIM Selectors
โ None detectedNo DKIM records found for common selectors โ 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
1 record- SPFv=spf1 a mx ip6:2a01:4f8:10b:d1f::2 ip6:2a01:4f8:10a:9d7::2 ip4:88.99.57.136 ip4:94.130.8.226 -all
Free ยท No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts โ unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for ruhr-reggae-summer.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits