guggenheim.org

Valid Email Server
Domain Lookup › guggenheim.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
guggenheim.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 02:34:34 UTC · ↺ Refresh

MX Hostnames

  • guggenheim-org.mail.protection.outlook.com

MX Priorities

  • guggenheim-org.mail.protection.outlook.com: 0

A / AAAA Records

  • 23.185.0.2 (no PTR)
  • 2620:12a:8001::2 (no PTR)
  • 2620:12a:8000::2

Mail Server IPs

  • 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
  • 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
  • 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1422.awsdns-49.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1422.awsdns-49.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-265.awsdns-33.com
ns-633.awsdns-15.net
ns-1422.awsdns-49.org
ns-1675.awsdns-17.co.uk

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:64.124.176.69 ip4:172.254.222.85 ip4:192.168.1.154 ip4:166.78.121.171 ip4:192.237.248.216 ip4:198.101.154.70 ip4:166.78.241.44 ip4:192.237.163.190 ip4:192.240.166.45/30 include:amazonses.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 5 found
selector1._domainkey
selector2._domainkey
default._domainkey
s1._domainkey
s2._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
  • SPFv=spf1 ip4:64.124.176.69 ip4:172.254.222.85 ip4:192.168.1.154 ip4:166.78.121.171 ip4:192.237.248.216 ip4:198.101.154.70 ip4:166.78.241.44 ip4:192.237.163.190 ip4:192.240.166.45/30 include:amazonses.com include:spf.protection.outlook.com ~all
  • 20o63MoMxDt0a5YJHrUa0AQiOGjvJKfDQP1HWh+EjurqD+18XBpNZFqJQPsKCtoitBz3wTV8saAqmbaiInJNXw==
  • MS=ms49509401
  • apple-domain-verification=PyTAsWET6lDJKwhS
  • facebook-domain-verification=9o2ckl3mv1pvzct9q868tqczy3limd
  • google-site-verification=OO1G_LqrsK0-dxxk4BT9I2s0j8WjxYqIvwjsVKZP_b0
  • google-site-verification=PChbk09jG4UFx4ofiuSkdtl0IcsFXMSdHrUA_l4Jrxcfacebook-domain-verification=f6w2a1l501jj8ndg5z04b6286w8qjs
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