substack.us - dns.ninja
substack.us
us
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.cctld.us ⭐ | ||||||
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
| SOA | a.cctld.usadmin@tldns.godaddy serial=1790181503 | ||||||
Same first word
Similar names
Previous names
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DNS History
10 records (9 active, 1 former)
●NSns1.aftermarket.com2026-08-31 → 2026-09-23 · 2 obs
● 2026-09-23 17:15:06
●NSns1.afternic.com2026-08-31 → 2026-09-23 · 2 obs
● 2026-09-23 17:15:06
●NSns2.aftermarket.com2026-08-31 → 2026-09-23 · 2 obs
● 2026-09-23 17:15:06
●NSns2.afternic.com2026-08-31 → 2026-09-23 · 2 obs
● 2026-09-23 17:15:06
●MXmx1.simplelogin.co2026-09-02 → 2026-09-23 · 2 obs
● 2026-09-23 17:15:06
●MXmx2.simplelogin.co2026-09-02 → 2026-09-23 · 2 obs
● 2026-09-23 17:15:06
●A13.248.169.482026-08-31 → 2026-09-23 · 4 obs
○ 2026-09-02 00:07:56
● 2026-09-05 09:01:16
● 2026-09-23 17:15:06
●A2600:9000:a413:2068:7cac:af4e:cf97:88182026-09-05 → 2026-09-23 · 3 obs
● 2026-09-05 09:01:16
● 2026-09-23 17:15:06
○A3.33.224.1472026-09-02 → 2026-09-02 · 4 obs
● 2026-09-02 00:07:56
○ 2026-09-05 09:01:16
○ 2026-09-23 17:15:06
●A76.223.54.1462026-08-31 → 2026-09-23 · 4 obs
○ 2026-09-02 00:07:56
● 2026-09-05 09:01:16
● 2026-09-23 17:15:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | m.cctld.us, k.cctld.us, b.cctld.us, x.cctld.us... | 16 records |
| substack.us | ns1.aftermarket.com, ns2.aftermarket.com, ns1.afternic.com, ns2.afternic.com | - |
✅ Authoritative Response
Server:173.201.66.69
NS records: ns1.aftermarket.com, ns2.aftermarket.com, ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for substack.us (unsigned zone)
⏱️ Timing
Total: 5537ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 3.33.224.147 |
| AAAA | 1 | 2600:9000:a413:2068:7cac:af4e:cf97:8818 |
| NS | 2 | ns1.afternic.com, ns2.afternic.com |
| MX | 2 | mx1.simplelogin.co (pri: 1), mx2.simplelogin.co (pri: 5) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns2.afternic.com dns.jomax.net |
📌 Glue Records Collected
Total: 16
In-bailiwick: 16 (m.cctld.us, m.cctld.us, k.cctld.us...)
Analysis
IP Addresses
substack.us has three IP addresses: 13.248.169.48, 76.223.54.146 and 2600:9000:a413:2068:7cac:af4e:cf97:8818.
whinerobot.xyz, lr29.com, rapsodee.com and two other host names share IP numbers with substack.us.
Name Servers
The authoritative name servers for substack.us are ns1.aftermarket.com, ns2.aftermarket.com, ns1.afternic.com and ns2.afternic.com.
The name servers of substack.us overlap at least partially with those of other domains — among them utilitycounter.com, s01.hmong.net, aseantrading.com and two more.
These name servers commonly co-occur with the name servers ns1.domain.io, ns2.domain.io, verification-q2yfbmuxrvnsdnaogqtqft.ns101.verify.hn and verification-m3erh32ujyoastvophjvuz.ns101.verify.hn.
Each of the four hosts ns1.aftermarket.com, ns2.aftermarket.com, ns1.afternic.com and ns2.afternic.com has two IP addresses. ns1.aftermarket.com points to 3.141.121.8 and 2600:1f16:529:db01::53. ns2.aftermarket.com points to 3.15.73.134 and 2600:1f16:529:db00::53. ns1.afternic.com points to 97.74.98.69 and 2603:5:2126::45. ns2.afternic.com points to 173.201.66.69 and 2603:5:2226::45.
Mail Servers
Mail for substack.us is handled by two mail servers — mx1.simplelogin.co and mx2.simplelogin.co.
substack.us uses an identical mail server configuration to several other domains — among them cfilippou.com, proxbox.io, johnbasl.net and two more.
The mail servers for substack.us overlap at least partially with those of other domains, including mx.pfiffner.me and pithypiquantphysicist.com.
mx1.simplelogin.co and mx2.simplelogin.co share the same two IP addresses — 176.119.200.136 and 185.205.70.136.
Both mx1.simplelogin.co and mx2.simplelogin.co resolve to 176.119.200.136 IP addresses each.
Both mx1.simplelogin.co and mx2.simplelogin.co resolve to 185.205.70.136 IP addresses each.