Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
class4kids.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 13:05:23 UTC · ↺ Refresh
MX Hostnames
- class4kids-co-uk.mail.protection.outlook.com
MX Priorities
- class4kids-co-uk.mail.protection.outlook.com: 1
A / AAAA Records
- 13.249.91.90 ↩ server-13-249-91-90.jfk52.r.cloudfront.net
- 13.249.91.84 ↩ server-13-249-91-84.jfk52.r.cloudfront.net
- 13.249.91.87
- 13.249.91.113
- 2600:9000:21b8:3800:d:3e62:b980:93a1
- 2600:9000:21b8:4200:d:3e62:b980:93a1
- 2600:9000:21b8:3400:d:3e62:b980:93a1
- 2600:9000:21b8:da00:d:3e62:b980:93a1
- 2600:9000:21b8:ca00:d:3e62:b980:93a1
- 2600:9000:21b8:7a00:d:3e62:b980:93a1
- 2600:9000:21b8:f000:d:3e62:b980:93a1
- 2600:9000:21b8:4600:d:3e62:b980:93a1
Mail Server IPs
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-946.awsdns-54.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-946.awsdns-54.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1809.awsdns-34.co.uk
ns-946.awsdns-54.net
ns-118.awsdns-14.com
ns-1238.awsdns-26.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:54.194.30.101/32 include:_spf.google.com include:mailgun.org include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._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
2 records- SPFv=spf1 ip4:54.194.30.101/32 include:_spf.google.com include:mailgun.org include:spf.protection.outlook.com -all
- google-site-verification=cYQbg0hyLkAEn7DpyDd7bul5p-MGdinuh7_5Inwij7E
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
See demo & docs
Deep verification
Full email verification for class4kids.co.uk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits