sendmail.org - dns.ninja
sendmail.org
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1784724612 | ||||||
rank #2059 in the tld
WOT: SAFE (83/100)
📈 Tranco rank: #75,610
Subdomains
Same first word
Similar names
DNS History
12 records (8 active, 4 former)
●NSns.sendmail.org2026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 17:33:48
● 2026-07-22 13:17:50
○NSns1.proofpoint.com2015-08-05 → 2016-12-04 · 4 obs
● 2016-12-04 01:40:00
○ 2026-02-19 17:33:48
○ 2026-07-22 13:17:50
○NSns3.proofpoint.com2015-08-05 → 2016-12-04 · 4 obs
● 2016-12-04 01:40:00
○ 2026-02-19 17:33:48
○ 2026-07-22 13:17:50
●NSpdns99.ultradns.biz2015-12-22 → 2026-07-22 · 3 obs
● 2015-12-22 18:10:18
● 2026-07-22 13:17:50
●NSpdns99.ultradns.com2015-12-22 → 2026-07-22 · 3 obs
● 2015-12-22 18:10:18
● 2026-07-22 13:17:50
●NSpdns99.ultradns.net2015-12-22 → 2026-07-22 · 3 obs
● 2015-12-22 18:10:18
● 2026-07-22 13:17:50
●NSpdns99.ultradns.org2015-12-22 → 2026-07-22 · 3 obs
● 2015-12-22 18:10:18
● 2026-07-22 13:17:50
●MXmc.sendmail.org2026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 17:33:48
● 2026-07-22 13:17:50
○MXservices.sendmail.com2015-08-05 → 2016-12-04 · 4 obs
● 2016-12-04 01:40:00
○ 2026-02-19 17:33:48
○ 2026-07-22 13:17:50
○A209.246.26.162015-08-05 → 2016-12-04 · 4 obs
● 2016-12-04 01:40:00
○ 2026-02-19 17:33:48
○ 2026-07-22 13:17:50
●A2600:1f18:3059:9900::1122026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 17:33:48
● 2026-07-22 13:17:50
●A50.19.116.1232026-02-19 → 2026-07-22 · 3 obs
● 2026-02-19 17:33:48
● 2026-07-22 13:17:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| sendmail.org | pdns99.ultradns.net, pdns99.ultradns.org, pdns99.ultradns.biz, pdns99.ultradns.com | 2 records |
✅ Authoritative Response
Server:156.154.65.99
NS records: pdns99.ultradns.net, pdns99.ultradns.org, pdns99.ultradns.biz, pdns99.ultradns.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 393ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 50.19.116.123 |
| AAAA | 1 | 2600:1f18:3059:9900::112 |
| NS | 4 | pdns99.ultradns.biz, pdns99.ultradns.com... |
| MX | 1 | mc.sendmail.org (pri: 10) |
| TXT | 1 | v=spf1 include:%{ir}.%{v}.%{d}.spf.has.p |
| SOA | 1 | ns.sendmail.org hostmaster.sendmail.org |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (pdns99.ultradns.org, pdns99.ultradns.org)
Analysis
Hierarchy
sendmail.org sits above mc.sendmail.org, www.sendmail.org and ns.sendmail.org in the domain hierarchy.
IP Addresses
sendmail.org points to the IP addresses 50.19.116.123 and 2600:1f18:3059:9900::112
mc.sendmail.org, www.sendmail.org, ns.sendmail.org plus two other host names have IP numbers in common with sendmail.org.
Name Servers
Five name servers handle delegation for sendmail.org: pdns99.ultradns.biz, pdns99.ultradns.com, pdns99.ultradns.net and two others.
There is at least partial name server overlap between sendmail.org and other domains — customlanyards4all.com, vestwise.net, proofpoint.im and two more among them.
These name servers tend to appear in combination with the name servers pdns99.ultradns.org, ns1.proofpoint.com, ns3.proofpoint.com and infoblox-sc4.ppops.net.
Host names pointing to two IP addresses:
pdns99.ultradns.biz maps to two IP addresses — 156.154.66.99 and 2610:a1:1015::87.
pdns99.ultradns.com maps to two IP addresses — 156.154.64.99 and 2001:502:f3ff::87.
pdns99.ultradns.net maps to two IP addresses — 156.154.65.99 and 2610:a1:1014::87.
ns.sendmail.org maps to two IP addresses — 50.19.116.123 and 2600:1f18:3059:9900::112.
pdns99.ultradns.org maps to two IP addresses — 156.154.67.99 and 2001:502:4612::87.
Mail Servers
sendmail.org uses one mail server — mc.sendmail.org.
sendmail.org uses the same mail servers as other domains, including mc.sendmail.org.
mc.sendmail.org carries two IP numbers: 50.19.116.123 and 2600:1f18:3059:9900::112.