substack.info - dns.ninja
substack.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:440b::6812:257e🇺🇸 Cloudflare2606:4700:440b::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2a06:98c1:3106::ac40:9682🇺🇸 Cloudflare2a06:98c1:3106::/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 | 34.36.182.139🇺🇸 Google34.32.0.0/11 | ||||||
| PTR | 139.182.36.34.bc.googleusercontent.com | ||||||
| MX | mxb.mailgun.org ⭐ | ||||||
| A | 34.149.254.5🇺🇸 Google34.148.0.0/14 | ||||||
| PTR | 5.254.149.34.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 | 2606:4700:440b::6812:257e, 2a06:98c1:3106::ac40:9682 | ||||||
| SOA | ali.ns.cloudflare.comdns@cloudflare.com serial=2409827039 | ||||||
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=1785552371 | ||||||
Same first word
substack.life |
substack.info |
substack.it |
substack.com |
substack.today |
substack.net |
substack.link |
substack.co |
substack.ai |
substack.ca |
Similar names
DNS History
10 records (8 active, 2 former)
●NSali.ns.cloudflare.com2026-02-19 → 2026-08-01 · 2 obs
● 2026-08-01 03:25:58
●NSlee.ns.cloudflare.com2026-02-19 → 2026-08-01 · 2 obs
● 2026-08-01 03:25:58
●MXmxa.mailgun.org2026-02-19 → 2026-08-01 · 2 obs
● 2026-08-01 03:25:58
●MXmxb.mailgun.org2026-02-19 → 2026-08-01 · 2 obs
● 2026-08-01 03:25:58
●A104.18.37.1262026-02-19 → 2026-08-01 · 2 obs
● 2026-08-01 03:25:58
●A172.64.150.1302026-02-19 → 2026-08-01 · 2 obs
● 2026-08-01 03:25:58
○A2606:4700:440a::6812:257e2026-02-19 → 2026-05-18 · 4 obs
● 2026-05-18 23:35:42
○ 2026-06-29 19:49:32
○ 2026-08-01 03:25:58
●A2606:4700:440b::6812:257e2026-06-29 → 2026-08-01 · 3 obs
● 2026-06-29 19:49:32
● 2026-08-01 03:25:58
●A2a06:98c1:3106::ac40:96822026-06-29 → 2026-08-01 · 3 obs
● 2026-06-29 19:49:32
● 2026-08-01 03:25:58
○A2a06:98c1:3109::ac40:96822026-02-19 → 2026-05-18 · 4 obs
● 2026-05-18 23:35:42
○ 2026-06-29 19:49:32
○ 2026-08-01 03:25:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a0.info.afilias-nst.info, a2.info.afilias-nst.info, c0.info.afilias-nst.info | - |
| substack.info | ali.ns.cloudflare.com, lee.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.33.129
NS records: ali.ns.cloudflare.com, lee.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for substack.info (unsigned zone)
⏱️ Timing
Total: 517ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.18.37.126, 172.64.150.130 |
| AAAA | 2 | 2606:4700:440b::6812:257e, 2a06:98c1:3106::ac40:9682 |
| 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 points to the four IP addresses 104.18.37.126, 172.64.150.130, 2606:4700:440b::6812:257e and 2a06:98c1:3106::ac40:9682.
Among the host names that share IP numbers with substack.info are er21vd302g-att-maildtll-0a53d.drr.ac, 1978.drr.ac, singinlinksaccnt.drr.ac and two others.
Name Servers
The NS records for substack.info delegate to ali.ns.cloudflare.com and lee.ns.cloudflare.com.
substack.info has the same name server delegation as a number of other domains, such as shadum.com, freedot.biz, substack.link and two more.
There is at least partial name server overlap between substack.info and other domains — heijnes.nl, scootersteerer.com, usalegalbetting.com and two more among them.
These name servers frequently co-occur with the name servers earl.ns.cloudflare.com and matteo.ns.cloudflare.com.
Host names resolving to 6 IP numbers:
ali.ns.cloudflare.com maps to 108.162.192.59, 172.64.32.59, 173.245.58.59 and 3 additional IP addresses.
lee.ns.cloudflare.com maps to 108.162.193.129, 172.64.33.129, 173.245.59.129 and 3 additional IP addresses.
Mail Servers
The MX records for substack.info point to two mail servers: mxa.mailgun.org and mxb.mailgun.org.
substack.info has the same mail server arrangement as a number of other domains, for example jml-consulting.com, richardkgray.com, cheap-you.com and two more.
substack.info shares at least some of its mail servers with other domains — for example artfulhome.com, eaglelakecamps.com, yumerita.jp and two more.
mxa.mailgun.org → 34.36.182.139 and mxb.mailgun.org → 34.149.254.5: one IP number per host name.