Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rkci.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 05:55:04 UTC · ↺ Refresh
MX Hostnames
- rkci-com.mail.protection.outlook.com
MX Priorities
- rkci-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.21 (no PTR)
- 141.193.213.20 (no PTR)
Mail Server IPs
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns27.worldnic.com namehost.worldnic.com 125061710 10800 3600 604800 3600
Primary NS (mname)
ns27.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125061710
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns28.worldnic.com
ns27.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:104.214.25.210 ip4:75.108.244.44 ip4:52.1.234.206 ip4:52.70.152.226 ip4:71.42.104.162 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ 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
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- cm._domainkey.rkci.com
- GvMAbVjGyIpKTWRq2ja9qodJz7dSB3icY59amN4SFMpHhasqHXTMMf3EbU2jMLLUecm6t8ksJqedAr/of3I0rw==
- MS=ms17938699
- google-site-verification=ebLvhsh4f2nXVOfp6IQDemsYD3VRBiKJ9qZ63nca-yc
- SPFv=spf1 ip4:104.214.25.210 ip4:75.108.244.44 ip4:52.1.234.206 ip4:52.70.152.226 ip4:71.42.104.162 include:spf.protection.outlook.com ~all
- k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDTZGup0ebFBllqcvuXOm/FYN/USS8l7nHBcfsXizQu0B1HiEQ0NVguG6HUSKR/mVsjGdWPGMgiF4Kjdz0xTJUs+UvjuhpZH8ndit34zgXIe3ACao8128pJNhE/rIhZ6wCSqJ2du/+6N6WDW8W83+e2kEULnBR0tDtV3MMy0aGMaQIDAQAB
- apple-domain-verification=GnffmkZWpAFwLvXx
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 rkci.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits