substackos.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`substackos.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:4636^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:dc6e^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.70.54^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.220.110^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`abby.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a64^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c064^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`abby.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2064^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`abby.ns.cloudflare.com`
		A	108.162.192.100^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
		A	172.64.32.100^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
		A	173.245.58.100^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
NS	`apollo.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b42^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`apollo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c142^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`apollo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2142^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`apollo.ns.cloudflare.com`
		A	108.162.193.66^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`apollo.ns.cloudflare.com`
		A	172.64.33.66^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`apollo.ns.cloudflare.com`
		A	173.245.59.66^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`apollo.ns.cloudflare.com`
MX	`mx1.mail.ovh.net` ⭐
		A	188.165.36.237^{🇫🇷 OVH188.165.0.0/16 ISP Paris, France}
			PTR	`mx1.mail.ovh.net`
MX	`mx2.mail.ovh.net`⁽⁵⁾
		A	87.98.160.167^{🇫🇷 OVH87.98.128.0/17 ISP Paris, France}
			PTR	`mx2.mail.ovh.net`
MX	`mx3.mail.ovh.net`⁽¹⁰⁰⁾
		A	91.121.53.175^{🇫🇷 OVH91.121.0.0/16 ISP Paris, France}
			PTR	`mx3.mail.ovh.net`
TXT	`1\|www.substackos.com`
TXT	`pinterest-site-verification=6807ffd6eedaefcee051be31553088f6`
TXT	`v=spf1 include:mx.ovh.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.70.54, 172.67.220.110
		IPv6 hints	2606:4700:3033::6815:4636, 2606:4700:3035::ac43:dc6e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=140, name=cloudflare-ech.com
SOA	`abby.ns.cloudflare.com`dns@cloudflare.com serial=2408673065

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1787616241

Same first word

substackos.com

Previous names

Next names

DNS History

9 records (9 active, 0 former)

●NSabby.ns.cloudflare.com2026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●NSapollo.ns.cloudflare.com2026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●MXmx1.mail.ovh.net2026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●MXmx2.mail.ovh.net2026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●MXmx3.mail.ovh.net2026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●A104.21.70.542026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●A172.67.220.1102026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●A2606:4700:3033::6815:46362026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

●A2606:4700:3035::ac43:dc6e2026-08-17 → 2026-08-25 · 2 obs

● 2026-08-17 15:51:14
● 2026-08-25 00:34:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
substackos.com	abby.ns.cloudflare.com, apollo.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.100

NS records: abby.ns.cloudflare.com, apollo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for substackos.com (unsigned zone)

⏱️ Timing

Total: 190ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.220.110, 104.21.70.54`
AAAA	2	`2606:4700:3035::ac43:dc6e, 2606:4700:3033::6815:4636`
NS	2	`abby.ns.cloudflare.com, apollo.ns.cloudflare.com`
MX	3	`mx1.mail.ovh.net (pri: 1), mx3.mail.ovh.net (pri: 100)...`
TXT	3	`1\|www.substackos.com, pinterest-site-verification=6807ffd6eeda...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`abby.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (abby.ns.cloudflare.com, abby.ns.cloudflare.com, abby.ns.cloudflare.com...)

Analysis

IP Addresses

substackos.com points to the four IP addresses 104.21.70.54, 172.67.220.110, 2606:4700:3033::6815:4636 and 2606:4700:3035::ac43:dc6e.

Among the host names that share IP numbers with substackos.com are pomelowinecompany.com, login.kujangbet168-gokil.site, www.bitonlongwallet.com and two others.

Name Servers

Two name servers handle the delegation for substackos.com: abby.ns.cloudflare.com and apollo.ns.cloudflare.com.

substackos.com has the same name server delegation as a number of other domains, such as russellbrinson.com, domoticavoorscholen.nl, tijdelijkalarm.nl and two more.

There is at least partial name server overlap between substackos.com and other domains — baoabothailand.com, dreamshirts.ru, camilatkluppel.workers.dev and two more among them.

The name servers lloyd.ns.cloudflare.com, crystal.ns.cloudflare.com and lucy.ns.cloudflare.com are often found in combination with these name servers.

Host names resolving to 6 IP numbers:

abby.ns.cloudflare.com resolves to 108.162.192.100, 172.64.32.100 and 173.245.58.100 among others, with 3 other IP addresses in total.

apollo.ns.cloudflare.com resolves to 108.162.193.66, 172.64.33.66 and 173.245.59.66 among others, with 3 other IP addresses in total.

Mail Servers

Incoming mail for substackos.com is delivered via three mail servers: mx1.mail.ovh.net, mx2.mail.ovh.net and mx3.mail.ovh.net.

substackos.com shares at least some of its mail servers with other domains — for example evidenceb-services.com, artemium.net, chambresdhotesgidaszewski.com and two more.

These mail servers are routinely seen in conjunction with the mail servers mx4.mail.ovh.net and mx0.mail.ovh.net.

mx1.mail.ovh.net points to 188.165.36.237; mx2.mail.ovh.net points to 87.98.160.167; mx3.mail.ovh.net points to 91.121.53.175 — each hostname maps to exactly one IP address.