Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cityofrc.us
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 01:46:38 UTC · ↺ Refresh
MX Hostnames
- cityofrc-us.mail.protection.outlook.com
MX Priorities
- cityofrc-us.mail.protection.outlook.com: 0
A / AAAA Records
- 52.36.131.229 ↩ ec2-52-36-131-229.us-west-2.compute.amazonaws.com
Mail Server IPs
- 52.101.8.52 ↩ mail-ds0pr09cu00104.inbound.protection.outlook.com
- 52.101.11.12 ↩ mail-sa9pr09cu00104.inbound.protection.outlook.com
- 52.101.9.19 ↩ mail-blapr09cu00103.inbound.protection.outlook.com
- 52.101.8.50 ↩ mail-dm6pr09cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f90e::1 ↩ mail-sa9pr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f904::1 ↩ mail-ds0pr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f900::1 ↩ mail-blapr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f904:: ↩ mail-dm6pr09cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
pdns1.ultradns.net root.city.ci.rancho-cucamonga.ca.us 2010051358 86400 86400 604800 10800
Primary NS (mname)
pdns1.ultradns.net
Admin Email (rname)
root@city.ci.rancho-cucamonga.ca.us
Serial
2010051358
Refresh
86400s
Retry
86400s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
pdns5.ultradns.info
pdns6.ultradns.co.uk
pdns1.ultradns.net
pdns2.ultradns.net
pdns3.ultradns.org
pdns4.ultradns.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:199.201.174.212 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; fo=1; ri=3600; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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- google-site-verification=NUWM7WrzQiZEhVG2AygdNEiiCqRQjClRygXEQJwTW4w
- atlassian-domain-verification=4Pg3svT5B37lJ76Ipu1E/jGNZJkxOg1NLfLpg8lNDBcEoaQjKIIrq4tXiy74Hvjn
- MS=ms78717226
- apple-domain-verification=Ads9KFAbuaZC3UK7
- bw=keU+OoYGBYaNI/Rmgrm41Apl9rN6e7Odhp0NxzjTJp0+
- openai-domain-verification=dv-WsuPK6s45kXZspCI4HC8YK7r
- SPFv=spf1 ip4:199.201.174.212 include:spf.protection.outlook.com -all
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