Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
royalcaribbean.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 00:58:25 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 0
- us-smtp-inbound-2.mimecast.com: 0
A / AAAA Records
- 23.62.10.84 ↩ a23-62-10-84.deploy.static.akamaitechnologies.com
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
a1-96.akam.net admindns.rccl.com 687 900 900 2419200 900
Primary NS (mname)
a1-96.akam.net
Admin Email (rname)
admindns@rccl.com
Serial
687
Refresh
900s
Retry
900s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
a5-66.akam.net
a16-64.akam.net
a14-67.akam.net
a3-65.akam.net
a1-96.akam.net
a6-67.akam.net
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=_spf.rccl.com
📊 DNS lookups: 1/10
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — 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
18 records- canva-site-verification=ZTCgMIXLxOW-1FbqNYwQBA
- apple-domain-verification=6wjQEtyVg1z38J60
- _y96fjxqq0grj31xm82842us0vvikkdi
- MS=ms63646554
- google-site-verification=vIh6cmYOBF2TX90v_tSJT1RI_p6wPoTRFQTFfaxhA9k
- _at4n02p8uq8pta17k5pjfw84ytm5q07
- docusign=dcdd17bc-f092-4685-8e6b-d95fde60e82b
- bj1t0q6x83lmxgzjpfm1dlfgq34gwfrw
- 2w2pb7hsn1yqtpwy4hp1y957fy5xfwgl
- google-site-verification=1Dg_LGszFMO-7pnLhLdDayHcR4onVAttYYBFdsFO_HY
- google-site-verification=nHclaqIFy2La0az62wXK7RuVBgavgcqSYdPwvYw58Nc
- AF66-643E-5FE6-C2E4-C693-93C8-2299-A557
- 4cc7lz67n4jjklqkhr932m416xnn4scn
- _5wyxqqu1fzll8i2ifhwdcf3pu3rw3gn
- mj78d8y5nn97hkqsppchdv5wnyz4p0z4
- _ekzohbi4jg3x2pno23emo477zgfvuvc
- bvpykt5gcqk8gm1g8pgqy92s8xxnhzdg
- SPFv=spf1 redirect=_spf.rccl.com
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 royalcaribbean.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits