substack.info - robtex.com
substack.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:440a::6812:257e🇺🇸 Cloudflare2606:4700:440a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2a06:98c1:3109::ac40:9682🇺🇸 Cloudflare2a06:98c1:3109::/48 ✓ In HTTPS hints | ||||||
| A | 104.18.37.126Cloudflare104.18.37.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.64.150.130🇺🇸 Cloudflare172.64.150.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | ali.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a3b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ali.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c03b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | ali.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:203b🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | ali.ns.cloudflare.com | ||||||
| A | 108.162.192.59🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ali.ns.cloudflare.com | ||||||
| A | 172.64.32.59🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ali.ns.cloudflare.com | ||||||
| A | 173.245.58.59🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ali.ns.cloudflare.com | ||||||
| NS | lee.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b81🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lee.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c181🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | lee.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2181🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | lee.ns.cloudflare.com | ||||||
| A | 108.162.193.129🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lee.ns.cloudflare.com | ||||||
| A | 172.64.33.129🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lee.ns.cloudflare.com | ||||||
| A | 173.245.59.129🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lee.ns.cloudflare.com | ||||||
| MX | mxa.mailgun.org ⭐ | ||||||
| A | 34.149.254.5🇺🇸 Google34.148.0.0/14 | ||||||
| PTR | 5.254.149.34.bc.googleusercontent.com | ||||||
| MX | mxb.mailgun.org ⭐ | ||||||
| A | 34.36.182.139🇺🇸 Google34.32.0.0/11 | ||||||
| PTR | 139.182.36.34.bc.googleusercontent.com | ||||||
| TXT | google-site-verification=vQEKLOUDfKNOQAv9W3EUMiRD6e5ibAEPhc2yCzP7big | ||||||
| TXT | v=spf1 include:_spf.google.com include:mailgun.org ~all | ||||||
| HTTPS | HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.18.37.126, 172.64.150.130 | ||||||
| IPv6 hints | 2606:4700:440a::6812:257e, 2a06:98c1:3109::ac40:9682 | ||||||
| SOA | ali.ns.cloudflare.comdns@cloudflare.com serial=2402745261 | ||||||
info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.info.afilias-nst.info ⭐ | ||||||
| NS | a2.info.afilias-nst.info | ||||||
| NS | b0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | b2.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | c0.info.afilias-nst.info | ||||||
| NS | d0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| SOA | a0.info.afilias-nst.infohostmaster@donuts.email serial=1778373724 | ||||||
Same first word
substack.life |
substack.info |
substack.com |
substack.today |
substack.net |
substack.support |
substack.link |
substack.co |
Similar names
DNS History
8 records (8 active, 0 former)
●NSali.ns.cloudflare.com2026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
●NSlee.ns.cloudflare.com2026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
●MXmxa.mailgun.org2026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
●MXmxb.mailgun.org2026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
●A104.18.37.1262026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
●A172.64.150.1302026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
●A2606:4700:440a::6812:257e2026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
●A2a06:98c1:3109::ac40:96822026-02-19 → 2026-05-10 · 2 obs
● 2026-05-10 01:02:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a0.info.afilias-nst.info, c0.info.afilias-nst.info, a2.info.afilias-nst.info | - |
| substack.info | lee.ns.cloudflare.com, ali.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.193.129
NS records: lee.ns.cloudflare.com, ali.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for substack.info (unsigned zone)
⏱️ Timing
Total: 446ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.64.150.130, 104.18.37.126 |
| AAAA | 2 | 2a06:98c1:3109::ac40:9682, 2606:4700:440a::6812:257e |
| NS | 2 | ali.ns.cloudflare.com, lee.ns.cloudflare.com |
| MX | 2 | mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10) |
| TXT | 2 | google-site-verification=vQEKLOUDfKNOQAv, v=spf1 include:_spf.google.com include:m |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h2"] |
| SOA | 1 | ali.ns.cloudflare.com dns.cloudflare.com |
Analysis
IP Addresses
substack.info resolves to four IP numbers: 2606:4700:440a::6812:257e, 2a06:98c1:3109::ac40:9682, 104.18.37.126 and 172.64.150.130.
Other host names such as er21vd302g-att-maildtll-0a53d.drr.ac, 1978.drr.ac, singinlinksaccnt.drr.ac, cookie.drr.ac and thedimebank.com share IPs with substack.info.
Name Servers
substack.info is delegated to two name servers: ali.ns.cloudflare.com and lee.ns.cloudflare.com.
substack.info shares the same name server setup as shadum.com, freedot.biz, substack.link, vzsp.ru and doctruyentieuthuyet.com.
substack.info at least partially shares name servers with other domains, for instance heijnes.nl, scootersteerer.com, usalegalbetting.com, cucuge.homes and agoff.net.
These name servers are commonly used with earl.ns.cloudflare.com and dan.ns.cloudflare.com.
Host names with six IP numbers:
ali.ns.cloudflare.com points to 2606:4700:50::adf5:3a3b, 2803:f800:50::6ca2:c03b, 2a06:98c1:50::ac40:203b, 108.162.192.59, 172.64.32.59 and 173.245.58.59.
lee.ns.cloudflare.com points to 2606:4700:58::adf5:3b81, 2803:f800:50::6ca2:c181, 2a06:98c1:50::ac40:2181, 108.162.193.129, 172.64.33.129 and 173.245.59.129.
Mail Servers
substack.info is handled by two mail servers: mxa.mailgun.org and mxb.mailgun.org.
The mail server setup for substack.info matches that of other domains, for instance jml-consulting.com, gitools.net, richardkgray.com, cheap-you.com and dial787.com.
substack.info shares at least partially some mail servers with other domains, including artfulhome.com, eaglelakecamps.com, yumerita.jp, maximizeprint.com.br and azuphone.com.
Host names with a single IP:
mxa.mailgun.org points to 34.149.254.5.
mxb.mailgun.org points to 34.36.182.139.