Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
arcr.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 22:19:22 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 35.215.96.27 ↩ 27.96.215.35.bc.googleusercontent.com
Mail Server IPs
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns23.worldnic.com namehost.worldnic.com 123082222 10800 3600 604800 3600
Primary NS (mname)
ns23.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
123082222
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns24.worldnic.com
ns23.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:205.139.111.0/24 ip4:205.139.110.0/24 ip4:207.211.30.0/24 ip4:207.211.31.0/25 a:mail.arcr.com include:_netblocks.mimecast.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- duo_sso_verification=61Lz6Gz3G6FEjMGQxeJaRM0YDmCi36M0Lhk17DP0rILWXP4IPSxYomcNCkx9ATFM
- MS=ms17801938
- SPFv=spf1 ip4:205.139.111.0/24 ip4:205.139.110.0/24 ip4:207.211.30.0/24 ip4:207.211.31.0/25 a:mail.arcr.com include:_netblocks.mimecast.com ~all
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