Mimecast USA

Results for us._netblocks.mimecast.com

SPF MX
DMARC*
 		BIMI MTA-STS
DNSSEC
 Nameservers Tech Partners
0 ❌ Mimecast
(p=reject) 		❌ ❌ ❌ ❌ ❌

2025-07-04 09:34:12 (via https://www.mckellar.co/?domain=us._netblocks.mimecast.com)
Advanced solutions for email security, email archiving and more. Secure your organisation. Protect communications, people & data. Advanced cybersecurity, simplified.
Visit Mimecast USA website

Umbrella Rank: > 1,000,000

DNSTwister | Comments | SPF Guru

SPF record for us._netblocks.mimecast.com
SPF Lookups = 0

"v=spf1 ip4:207.211.31.0/25 ip4:205.139.110.0/24 ip4:216.205.24.0/24 " "ip4:170.10.129.0/24 ip4:63.128.21.0/24 ip4:170.10.133.0/24 ip4:185.58.84.93/32 ip4:207.211.41.113/32 ip4:207.211.30.64/26 ip4:207.211.30.128/25 ip4:216.145.221.0/24 ip4:170.10.128.0/24 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ~all"

✔️ SPF Record appears to be valid, within the limit of 10 [RFC7208] - currently at 0
2025-07-04 09:34:12 (via https://www.mckellar.co/?domain=us._netblocks.mimecast.com) Top
2,130 IPv4 Addresses
0 IPv6 Addresses
14 subnets (and IP)


DMARC record for us._netblocks.mimecast.com


Inherited from: mimecast.com
Vendor(s): Mimecast
Policy: reject (100%)

✔️ Great work, You got there!
Your domain is secured and it is not possible for your domain to be spoofed.

Aggregate Recipients (1):
1Mimecast (mailto:[email protected])

Forensic Recipients (1):
mailto:[email protected]

Failure Reporting Options(Recommended fo=1):
Generate a DMARC failure report if any underlying authentication mechanism (SPF or DKIM) produced something other than an aligned “pass” result. (fo=1)
"v=DMARC1; p=reject; rua=mailto:[email protected];
ruf=mailto:[email protected]; pct=100; fo=1;"
2025-07-04 09:34:12 (via https://www.mckellar.co/?domain=us._netblocks.mimecast.com) Top

BIMI record for us._netblocks.mimecast.com

us._netblocks.mimecast.com currently has no default BIMI record

Read all about BIMI
2025-07-04 09:34:12 (via https://www.mckellar.co/?domain=us._netblocks.mimecast.com) Top


MX record for us._netblocks.mimecast.com

VendorPreferenceMX Record
NoneN/ANone
2025-07-04 09:34:12 (via https://www.mckellar.co/?domain=us._netblocks.mimecast.com) Top


MTA-STS record for us._netblocks.mimecast.com

us._netblocks.mimecast.com currently has no MTA-STS or TLS-RPT records

2025-07-04 09:34:12 (via https://www.mckellar.co/?domain=us._netblocks.mimecast.com) Top


Force refresh on us._netblocks.mimecast.com


your ip: 216.73.216.170


Public Suffix List version: 2025-06-02_07-53-42_UTC