jcurve.com

Valid Email Server
Domain Lookup › jcurve.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jcurve.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-03 01:05:06 UTC · ↺ Refresh

MX Hostnames

  • jcurve-com.mail.protection.outlook.com

MX Priorities

  • jcurve-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 18.238.80.83 ↩ server-18-238-80-83.jfk52.r.cloudfront.net
  • 18.238.80.53 ↩ server-18-238-80-53.jfk52.r.cloudfront.net
  • 18.238.80.67
  • 18.238.80.105

Mail Server IPs

  • 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
  • 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
  • 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com

SOA Record

Raw SOA ns-590.awsdns-09.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-590.awsdns-09.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-590.awsdns-09.net
ns-1079.awsdns-06.org
ns-1581.awsdns-05.co.uk
ns-467.awsdns-58.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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

3 records
  • @
  • MS=ms42143071
  • SPFv=spf1 include:spf.protection.outlook.com -all
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