Email DNS records for mastfirm.com
MX, SPF, DMARC and DKIM records published for mastfirm.com. Registered via Godaddy.com, Llc. Domain age: 17 years.
mastfirm.com can receive email: 1 MX record found. The MX records point to Microsoft mail servers. Authentication records found: SPF, DKIM. Not found: DMARC.
| Check | Result | What it means |
|---|---|---|
| MX | Found (1) | The domain is configured to receive email. |
| Mail provider | Microsoft | Inferred from the MX host names: they point to Microsoft mail servers. |
| SPF | Found | The record ends with -all: mail from servers not listed should be rejected (hard fail). |
| DMARC | Not found | No DMARC policy tells receivers how to handle messages that fail authentication. |
| DKIM | Found (default) | A DKIM public key is published under the selector default. |
Last checked: 2026-10-05 (UTC). DNS records can change over time. This report lists public DNS records; their presence does not by itself mean that a domain or its messages are safe.
MX records for mastfirm.com
- 0 mastfirm-com.mail.protection.outlook.com
Email authentication records for mastfirm.com
SPF record
v=spf1 +ip4:162.252.104.71 +ip4:162.252.104.69 +include:spf.protection.outlook.com -all
DKIM record (default)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnBn+/UNgPc1Ri3GxGc64giiNHE5on8jN+2fu48PhYX06gZL26xQVlAf+PpqmYNJKR9JKJkE5hMy1unF6LuI0N4bdmd9Ip1Mkb9PPgPSWob3SKReLBdqKyIQhi+EG2n7Zivq5O3I6nHO1aQPAuD0yHQaz1cEhxlO/v1RPat/kxN4BU8Mlh7aSbrWDxtK09EwXJm9IVUcqSR1d9mSa3ef3MSypqJB1dGEVQVRhgJMBzlnN/0VjX++3+L2WuqN20TSr1rR1/UFTzZnb/gTsFnDCEUI+rwCcCHyYq88hnkor3+WKyGHJwNrXQME/o9Q+0oue5vCPknvRNQ/1pa1Qz0rtBQIDAQAB;
Check a specific email address @mastfirm.com
This page checks how mastfirm.com is configured for email. It does not confirm that a specific mailbox exists — to check one address, use the form below.
Domain registration
Created2009-05-07
Updated2024-05-08
Expires2029-05-07
Server location
IP address199.16.173.116
CountryUnited States of America
ASN2635
Name servers
NS 1ns15.domaincontrol.com.
NS 2ns16.domaincontrol.com.
TXT records for mastfirm.com
TXT 1%RECORDVALUE%
TXT 2v=spf1 +ip4:162.252.104.71 +ip4:162.252.104.69 +include:spf.protection.outlook.com -all
Domain status
Status 1clienttransferprohibited https://icann.org/epp#clienttransferprohibited
Status 2clientupdateprohibited https://icann.org/epp#clientupdateprohibited
Status 3clientrenewprohibited https://icann.org/epp#clientrenewprohibited
Status 4clientdeleteprohibited https://icann.org/epp#clientdeleteprohibited