penbrothers.com

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
penbrothers.com
Yes
โœ“ Yes
Google
No
No
โš  Yes
No
No

Checked via [email protected] ยท 2026-03-20 04:19:47 UTC ยท โ†บ Refresh

MX Hostnames

  • alt1.aspmx.l.google.com
  • aspmx2.googlemail.com
  • aspmx.l.google.com
  • aspmx3.googlemail.com
  • _dc-mx.baea5f115ab8.penbrothers.com
  • alt2.aspmx.l.google.com

MX Priorities

  • aspmx2.googlemail.com: 10
  • aspmx3.googlemail.com: 10
  • _dc-mx.baea5f115ab8.penbrothers.com: 25
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 0

A / AAAA Records

  • 172.66.40.138 (no PTR)
  • 172.66.43.118 (no PTR)
  • 2606:4700:3108::ac42:2b76
  • 2606:4700:3108::ac42:288a

Mail Server IPs

  • 108.177.123.27 โ†ฉ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 172.253.116.27 โ†ฉ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b โ†ฉ dj-in-f27.1e100.net
  • 35.186.156.76 โ†ฉ 76.156.186.35.bc.googleusercontent.com
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.116.26 โ†ฉ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a โ†ฉ dj-in-f26.1e100.net

SOA Record

Raw SOA lisa.ns.cloudflare.com dns.cloudflare.com 2399323804 10000 2400 604800 1800
Primary NS (mname)
lisa.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399323804
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

vick.ns.cloudflare.com
lisa.ns.cloudflare.com

SPF Record

โœ“ Strict (-all)
v=spf1 include:_spf.google.com include:zohomail.com include:123456.spf03.hubspotemail.net -all
๐Ÿ“Š DNS lookups: 3/10
โœ“ Hard fail (-all) โ€” strict enforcement

DMARC Record

โœ“ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1
โœ“ Reject โ€” strongest protection
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]

DKIM Selectors

โœ“ 3 found
google._domainkey
s1._domainkey
s2._domainkey
โœ“ Public key: 392 chars (valid)
โœ“ DKIM properly configured for selector: google

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

15 records
  • google-site-verification=lYyZEcxirRHZvpiEmpSQfZrRKDB26_b2TEDmc_pWA3o
  • google-site-verification=n7f_xacEUnKqHQyX3uJqPk5kMrEWOOb6K5y-_rZGm7E
  • google-site-verification=rbsUtmFYMhgqf-i-mVthLHuXQK9jOFToUTV29ev-Zok
  • google-site-verification=wfjgYv8z7guPSuaxHCy2DHh-zAmkmd7y457WW4x8n2w
  • google-site-verification=yNe0m4J_oqcttdChB_2bJPI_RLZ0n21XlBx_s1jThlA
  • SPFv=spf1 include:_spf.google.com include:zohomail.com include:123456.spf03.hubspotemail.net -all
  • MS=A0E73E196E1E69BE933868C3DC3DE12F0E910F08
  • MS=ms15811336
  • MS=ms20926200
  • MS=ms99376776
  • asv=bacd86fc69f43ff0953f6eddcef1b647
  • docusign=0f7ead25-81a9-4eeb-9c5e-554dfabca2d1
  • docusign=5b0f1984-a676-44aa-95bd-320e15261ce3
  • google-site-verification=_oaTOL8q-86YnwnE6Gmo_WSrSap6iv8GZmP-xP7b7QQ
  • google-site-verification=a8hV8lItagOeteVAdYyefVIlKjQPBbNtTOJ_CTJp3jY
Free ยท No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts โ€” unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for penbrothers.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits