century21.com

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
century21.com
Yes
โœ“ Yes
Mimecast
No
No
โš  Yes
No
No

Checked via [email protected] ยท 2026-03-23 05:19:05 UTC ยท โ†บ Refresh

MX Hostnames

  • usb-smtp-inbound-2.mimecast.com
  • usb-smtp-inbound-1.mimecast.com

MX Priorities

  • usb-smtp-inbound-1.mimecast.com: 10
  • usb-smtp-inbound-2.mimecast.com: 10

A / AAAA Records

  • 3.133.188.188 โ†ฉ ec2-3-133-188-188.us-east-2.compute.amazonaws.com
  • 18.190.31.202 โ†ฉ ec2-18-190-31-202.us-east-2.compute.amazonaws.com

Mail Server IPs

  • 170.10.150.242 โ†ฉ usb-smtp-delivery-2.mimecast.com
  • 170.10.152.242 โ†ฉ usb-smtp-delivery-2.mimecast.com

SOA Record

Raw SOA ns-1443.awsdns-52.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1443.awsdns-52.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1443.awsdns-52.org
ns-1874.awsdns-42.co.uk
ns-387.awsdns-48.com
ns-629.awsdns-14.net

SPF Record

โœ“ Soft Fail (~all)
v=spf1 include:spf.anywhere.re ~all
๐Ÿ“Š DNS lookups: 1/10
~ Soft fail (~all) โ€” moderate enforcement

DMARC Record

โœ— p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
โš  p=none โ€” monitoring only, no enforcement
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]

DKIM Selectors

โœ“ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
โš  Public key (p=) missing in DKIM record for selector google.

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

All TXT Records

15 records
  • mcfc2lrx5l41lh272qfv6nv8w8h3514r
  • monday-com-verification=Vzp9M9wkXo140C0DRYV7ojmHp1rlhcE3dD23D45ox_s
  • nQAI9/Mf/i7rU4sGIqrWfd9I7TXQgwhQa87qWZI+4pUNTHHJuZ/gX1ZqlWfAYhCnWLGWOOp0Fg1lSVIECsPiUQ==
  • pardot1074273=2b82518acdd71c332feed0ceaeadc1c2be67b4510570237c0f823db87e4d10b2
  • pardot1074273=69a25332aabd2241ffd148220644eb8a26a8c22e84025481d5cf9df3741b5d85
  • pardot1074273=d10fe431a3ffae55d8cad8645a55abfda9ce49ce739f57d7e5548e6b15efcd79
  • pardot1074273=e8573c2e3702fa43c3ffc84b6a2c8c4fa5589037fd9cddd21ea8f7a618829080
  • tjng5q051jrp6tkbptv7m6qvyl9rtntw
  • SPFv=spf1 include:spf.anywhere.re ~all
  • xtfzlzs4srq28jg4gk4km1j648xjxnvt
  • _globalsign-domain-verification=6GywlC8PVV6mLfL6ToMeVqCDeqFk9IDu2uEqmYPqx3
  • atlassian-domain-verification=VU7xgQiZZa3avZ4LTJOsUdMn6RqZi0eGbU3Dk4MSPmi12S6yFEvEh/I8tLFNxlcr
  • e80af3bf63eb43f0a51118582eb565fe
  • facebook-domain-verification=p4r7ai7hqlnbzcott0uq5nrayy9yec
  • google-site-verification=eC1QkIUk7oA0XpNCnb-3y0Dpua1xTDg1HtGv5D_wM-w
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