Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
yellowbook.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 17:31:22 UTC · ↺ Refresh
MX Hostnames
- mxb-00232602.gslb.pphosted.com
- mxa-00232602.gslb.pphosted.com
MX Priorities
- mxa-00232602.gslb.pphosted.com: 0
- mxb-00232602.gslb.pphosted.com: 0
A / AAAA Records
- 13.33.252.60 ↩ server-13-33-252-60.jfk50.r.cloudfront.net
- 13.33.252.47 ↩ server-13-33-252-47.jfk50.r.cloudfront.net
- 13.33.252.83 ↩ server-13-33-252-83.jfk50.r.cloudfront.net
- 13.33.252.68 ↩ server-13-33-252-68.jfk50.r.cloudfront.net
Mail Server IPs
- 148.163.145.135 ↩ mx0a-00232602.pphosted.com
SOA Record
Raw SOA
ns-3.awsdns-00.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-3.awsdns-00.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1113.awsdns-11.org
ns-2039.awsdns-62.co.uk
ns-3.awsdns-00.com
ns-968.awsdns-57.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:12.111.223.1/24 ip4:64.199.226.1/24 include:spf.protection.outlook.com a mx Include:spf-00232602.pphosted.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];ruf=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- u5ysnLpj1aop8flT3CdvEVBSGzlobCAqseyeHrA9+y7NuuF5Ja+Z1k2CzCk6GXTZcgc+jOhizXID7zDYdqMfsA==
- SPFv=spf1 ip4:12.111.223.1/24 ip4:64.199.226.1/24 include:spf.protection.outlook.com a mx Include:spf-00232602.pphosted.com ~all
- MS=ms74353619
- apple-domain-verification=OChEKpzpWENouxrP
- google-site-verification=2FNimIaeJL5S4x-EXQwdWOyF_aSNepgsMK0z_9KWbrE
- google-site-verification=7BCPM8CxKrtX3nJ_Fx-SmnzwgXcjZ9Zt_RQXE_I91GU
- i0TXAUOFIB+iUxx8aj76h/XESrqYkSRroxMZkC5PoIk+cwJP7usdVo3TzKG/fsYvD4r90zycpeJnOJGekSFwkQ==
Full email verification for yellowbook.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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