Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
crowncastle.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 17:14:29 UTC · ↺ Refresh
MX Hostnames
- crowncastle-com.mail.protection.outlook.com
MX Priorities
- crowncastle-com.mail.protection.outlook.com: 10
A / AAAA Records
- 3.220.214.71 ↩ ec2-3-220-214-71.compute-1.amazonaws.com
- 3.220.212.11 ↩ ec2-3-220-212-11.compute-1.amazonaws.com
- 3.219.78.25
Mail Server IPs
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-757.awsdns-30.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-757.awsdns-30.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1902.awsdns-45.co.uk
ns-489.awsdns-61.com
ns-757.awsdns-30.net
ns-1209.awsdns-23.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:4.78.16.2 ip4:167.89.14.112 ip4:162.254.108.45 ip4:162.254.108.46 ip4:64.238.140.111 ip4:64.238.142.196 ip4:64.213.130.241 ip4:69.20.6.34 ip4:38.133.153.128/26 include:spf.protection.outlook.com include:_spf.qualtrics.com include:service-now.com include:mktomail.com include:_spf.ultipro.com include:mail.zendesk.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected],mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
14 records- docusign=7d67f31d-d38b-4b72-9dc2-faf7b4e5985b
- intersight=a980d1ad0139f9e9f117be97e09edba06e556c37afef7ac2303da4cea86a71f9
- google-site-verification=hFuK3QnjiqEKmzpl7fe3p3wmQbrFZufttULOmHqtIH0
- SPFv=spf1 ip4:4.78.16.2 ip4:167.89.14.112 ip4:162.254.108.45 ip4:162.254.108.46 ip4:64.238.140.111 ip4:64.238.142.196 ip4:64.213.130.241 ip4:69.20.6.34 ip4:38.133.153.128/26 include:spf.protection.outlook.com include:_spf.qualtrics.com include:service-now.com include:mktomail.com include:_spf.ultipro.com include:mail.zendesk.com -all
- paloaltonetworks-site-verification=c966116abc9fd1e2da3c0aa414e982d50228c61e7d904e78f0b840b3ed8421a0
- facebook-domain-verification=fiduibwy4gl0gvunq81171hwkj6q6h
- adobe-idp-site-verification=79d588e704b333d021c523cc4ee3ed6bac913e30573f51ea4270d54388f03ef0
- docker-verification=60f1e34f-4d96-4f62-865f-cd18477e5c0c
- postman-domain-verification=8b8d749d524c12a40087ae3a60b389ea0b4ed93818182146a8d4d53123eea35b
- docusign=0a150af2-227c-40ce-a228-5b30e67fb478
- asv=4e8bca747e4ef2483d4cdffb7c52aa07
- ciscocidomainverification=7a3e38ff1f6a37b5919ad546609644a9b2c997e5b409ca002be6af0b4ef00dd1
- smartsheet-site-validation=eOaS-DZ-BY2L7HDTXMzlg6fkQL8B1Wv2
- atlassian-domain-verification=bqsJUfeNTJdZtiH6erp3h58M/fn7k362Py3QG7HvNSJxfzytmFV6eoYc9ZnQnFVA
Full email verification for crowncastle.com
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