Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jfskc.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 15:52:42 UTC · ↺ Refresh
MX Hostnames
- jfskc-org.mail.protection.outlook.com
MX Priorities
- jfskc-org.mail.protection.outlook.com: 10
A / AAAA Records
- 172.67.155.134 (no PTR)
- 104.21.56.187 (no PTR)
- 2606:4700:3031::6815:38bb
- 2606:4700:3034::ac43:9b86
Mail Server IPs
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
SOA Record
Raw SOA
harlan.ns.cloudflare.com dns.cloudflare.com 2399774054 10000 2400 604800 1800
Primary NS (mname)
harlan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399774054
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
harlan.ns.cloudflare.com
rose.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:spf.emailsignatures365.com include:relay.mailchannels.net -all
📊 DNS lookups: 4/10
✓ 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
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- google-site-verification=kw0J5aWMZ5uTW_lbJRpYjffH-uq2gAPyONKShsouMcI
- SPFv=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:spf.emailsignatures365.com include:relay.mailchannels.net -all
- vhug0e5pinbkqm6h7gltf8po5b.
- asv=709f0d334c5bac368ab880f3cc9cc0c8
- atlassian-sending-domain-verification=bda6d8f0-2326-4bf8-9f6b-6151c2df05cd
- google-gws-recovery-domain-verification=46719749
- google-site-verification=CUhkAjFBVCiOgDADueDBKiUOYupl-K5L3x7Si20S7s8
- google-site-verification=dIPUW-CUwYPmbcxrfNCobqH5d57cmDWTKKVRtNWJNew
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 jfskc.org
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits