Domain Overview
DNS: โ 2mo ago
Checker: โ 2mo ago
century21.com
Yes
โ Yes
Mimecast
No
No
โ Yes
No
No
Checked via [email protected]
ยท 2026-03-23 05:19:05 UTC ยท โบ 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 โฉ ec2-3-133-188-188.us-east-2.compute.amazonaws.com
- 18.190.31.202 โฉ ec2-18-190-31-202.us-east-2.compute.amazonaws.com
Mail Server IPs
- 170.10.150.242 โฉ usb-smtp-delivery-2.mimecast.com
- 170.10.152.242 โฉ 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
โ Soft Fail (~all)
v=spf1 include:spf.anywhere.re ~all
๐ DNS lookups: 1/10
~ Soft fail (~all) โ moderate enforcement
DMARC Record
โ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
โ p=none โ monitoring only, no enforcement
๐ SPF alignment: Relaxed
ยท DKIM alignment: Relaxed
๐ง Reports โ mailto:[email protected]
DKIM Selectors
โ 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
โ 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
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 century21.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits