tds.net

Valid Email Server
Domain Lookup › tds.net

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tds.net
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 02:17:10 UTC · ↺ Refresh

MX Hostnames

  • mx.tds.net

MX Priorities

  • mx.tds.net: 10

A / AAAA Records

  • 216.165.153.4 ↩ h216-165-153-4.mdsnwi.tisp.static.tds.net

Mail Server IPs

  • 129.159.64.89 ↩ mx.tds.net

SOA Record

Raw SOA pv-dnsm.dns.tds.net hostmaster.tds.net 2025041785 21600 3600 604800 3600
Primary NS (mname)
pv-dnsm.dns.tds.net
Admin Email (rname)
hostmaster@tds.net
Serial
2025041785
Refresh
21600s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

c.dns.tds.net
a.dns.tds.net
d.dns.tds.net
b.dns.tds.net
f.dns.tds.net
ns.tds.net
e.dns.tds.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:216.170.158.128/25 ip4:216.170.157.128/25 ip4:216.170.231.0/24 ip4:204.246.1.0/24 ip4:152.144.128.0/24 ip4:63.240.89.0/24 ip4:69.128.76.0/22 ip4:69.128.72.30/31 ip4:69.128.79.137 ip4:69.128.79.171 ip4:69.128.233.224 ip4:69.128.233.131 ip4:69.128.235.161 ip4:69.128.235.139 include:aspmx.googlemail.com include:_spf.tds.syn-alias.com include:cust-spf.exacttarget.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=1; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

DKIM Selectors

✗ None detected

No 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

2 records
  • SPFv=spf1 ip4:216.170.158.128/25 ip4:216.170.157.128/25 ip4:216.170.231.0/24 ip4:204.246.1.0/24 ip4:152.144.128.0/24 ip4:63.240.89.0/24 ip4:69.128.76.0/22 ip4:69.128.72.30/31 ip4:69.128.79.137 ip4:69.128.79.171 ip4:69.128.233.224 ip4:69.128.233.131 ip4:69.128.235.161 ip4:69.128.235.139 include:aspmx.googlemail.com include:_spf.tds.syn-alias.com include:cust-spf.exacttarget.com ~all
  • yahoo-verification-key=/mP3lP0xlXqe99w6n33BTUpygptckA6ixLCNLKVSbQ0=
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for tds.net

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits