Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
comcast.com
Yes
✓ Yes
Proofpoint
No
Yes
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 19:58:54 UTC · ↺ Refresh
MX Hostnames
- mxa-00143702.gslb.pphosted.com
- mxb-00143702.gslb.pphosted.com
MX Priorities
- mxb-00143702.gslb.pphosted.com: 5
- mxa-00143702.gslb.pphosted.com: 5
A / AAAA Records
- 96.99.227.0 ↩ dns-upper-redirect.xfinity.com
Mail Server IPs
- 148.163.141.77 ↩ mx0b-00143702.pphosted.com
- 148.163.145.77 ↩ mx0a-00143702.pphosted.com
SOA Record
Raw SOA
dns101.comcast.net domregtech.comcastonline.com 2009104485 7200 3600 1209600 900
Primary NS (mname)
dns101.comcast.net
Admin Email (rname)
domregtech@comcastonline.com
Serial
2009104485
Refresh
7200s
Retry
3600s
Expire
1209600s
Minimum TTL
900s
Nameservers (NS)
dns102.comcast.net
dns103.comcast.net
dns105.comcast.net
dns104.comcast.net
dns101.comcast.net
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:148.163.145.77 ip4:148.163.141.77 ip4:162.150.44.71 ip4:96.114.158.212 ip4:68.87.31.167 ip4:68.87.96.15 ip4:96.114.28.75 ip4:96.114.28.76 ip4:67.231.157.49 ip4:67.231.149.53 ip4:192.28.144.202 include:spfext.zapproved.com include:_spf.mdp.comcast.net include:_spf.comcast.com include:spf-00143705.pphosted.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;fo=1;rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 3 found
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
32 records- atlassian-domain-verification=J+tB36tc4CyLsnqZ/MTW5tI3SZ+IOFAGTWEgMbo+FLRl+gvI4cSIQmMmTYOPEbTz
- docusign=8fb076b3-05e6-41c4-a6ee-6f6227be4b11
- apple-domain-verification=VNdTgwsxrDHE4eJM
- SPFv=spf1 ip4:148.163.145.77 ip4:148.163.141.77 ip4:162.150.44.71 ip4:96.114.158.212 ip4:68.87.31.167 ip4:68.87.96.15 ip4:96.114.28.75 ip4:96.114.28.76 ip4:67.231.157.49 ip4:67.231.149.53 ip4:192.28.144.202 include:spfext.zapproved.com include:_spf.mdp.comcast.net include:_spf.comcast.com include:spf-00143705.pphosted.com ~all
- paloaltonetworks-site-verification=b51e185f274a13eccff6f0e001549d4a2f08fc11c599ffde8f295cc7cf4c3138
- autodesk-domain-verification=9qi_qkHrCGa8onVbz33s
- airtable-verification=644c0c83b6807a2a10c20d4cf57505d7
- paloaltonetworks-site-verification=b6c919476067691db128e9375b002b801db8ab2a1de767bc27acb829530c59bd
- browserstack-domain-verification=e23475d1-ef64-4cf7-bf92-7620239fe86a
- amazonses:RYuDm+T3xJC87y0v4Cj4JlDm9d5enVzIZcr/arCF7J0=
- docusign=0ead29a6-1c9c-4b0c-865a-85a5a127e776
- aws-domain-verification=c326827a-0d9a-4061-a35d-1ea2a8afc6f5
- atlassian-domain-verification=n+yfnu4Su0J6uQkiatjL+lTNjzOZrPUGOpVn+HiHPwwDgMivjJD5Pwg7yzepfmIC
- airtable-verification=31e52307c66bf62d16697b7f0439d35e
- apple-domain-verification=XRKeuEf5cWtc2oDC
- google-site-verification=XdqEZdbhoNgKou31_aOrVN98TKJqxC0Ve3hNPBmSM7M
- docker-verification=f79a60d9-69ec-4c26-8d54-0165c0943613
- atlassian-domain-verification=xhDGO0SgEPXcuSpqqvu7kAzZyKrM2pat53VPEt5XvKGHvOq4ErhUFRioLG98Ndh3
- mongodb-site-verification=ucqyDX29txaTTi3K4euWVtieT0zCXRrg
- teamviewer-sso-verification=4a24e296450940f48ac4faba9a172fc0
- airtable-verification=d9386eea22fce5ee0d01209512aa7706
- intersight=3c7c5c60389a6b81830ef696f8761bc121ecf3f10d7cf8eef08f66af90451a8f
- eYZbzQ91r/pvvnV/FdrbHyREx7EaAwWLeNYk/EMQrJiGpNCsX4tJcWlHJDFzifTDbfnlhI6koqrm0dYgkIfncg==
- facebook-domain-verification=f1zw72g52fjiesmld6xtuj467pl7f5
- atlassian-domain-verification=C34TI2IiJOrziv9uyV2Yva6ZoRRCSZPjqc15wZASQfypHgNMl6esmkpDsYYXhjk7
- openai-domain-verification=dv-z3jR2RoYFRLipmXTqN9mx5hU
- airtable-verification=709aa8e31ed274aa8abc0f3a9286141f
- al0yn+08kj3q/n1E+s02ttnE5Fd9gIjwjjbn4mCggizGLJepyQ7cMxRTgw4RxYVoZ965qJIHfnH0966SxaicMw==
- smartsheet-site-validation=x1Hv84--jB9jvo7M0QQviDXPy_81zS_t
- pendo-domain-verification=XM4f85DQvo0VLA8QzSh-M0bjGEs
- adobe-idp-site-verification=8c9c59d410322404f7d75a0b3c770ce7b87cf141707b58224143253e1149f489
- 1password-site-verification=3BCX5ACVKBD73ADOMJ5XWM7JJ4
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