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open.substack.com checked at 2025-12-17T18:57:44.018Z 1345ms 53/53/53 100% R:9 allDone:true timedOut:false open.substack.com
| A | 2606:4700:4400::ac40:9638🇺🇸 Cloudflare | ||||||
| A | 2606:4700:440b::6812:25c8🇺🇸 Cloudflare | ||||||
| A | 104.18.37.200 Cloudflare | ||||||
| A | 172.64.150.56🇺🇸 Cloudflare | ||||||
substack.com
| MX | mxa.mailgun.org | ||||||
| MX | mxb.mailgun.org | ||||||
| NS | ali.ns.cloudflare.com | ||||||
| NS | lee.ns.cloudflare.com | ||||||
| A | 2606:4700:4400::ac40:9638🇺🇸 Cloudflare | ||||||
| A | 2606:4700:440b::6812:25c8🇺🇸 Cloudflare | ||||||
| A | 104.18.37.200 Cloudflare | ||||||
| A | 172.64.150.56🇺🇸 Cloudflare | ||||||
rank #278 in the tld
This domain, "substack.com", is an online platform that provides publishing tools for independent writers and journalists. It allows them to send digital newsletters directly to subscribers. The platform offers a business model that enables writers to monetize their work through subscriptions.
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AI analysis
The parent of pub.open.substack.com is open.substack.com.
open.substack.com maps to four IP numbers: 2606:4700:4400::ac40:9638, 2606:4700:440b::6812:25c8, 104.18.37.200 and 172.64.150.56.
other host names include slseem419.substack.com, pub.open.substack.com, substack.com, webhostingproviders.substack.com and html.illuminatedmobiles.substack.com; they share IP numbers with open.substack.com.