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substack.com checked at 2025-12-26T04:24:08.596Z 586ms 134/134/134 100% R:11 allDone:true timedOut:false cfaller:4f5f226f/2:329731af:15493:undefinedsubstack.com
com
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
substack.com is a parent of qbcutomerservicenumber.substack.com, officialhelpcare.substack.com, newsreviews.substack.com, bitdeep.substack.com, wisdomblend.substack.com and hundreds of other host names.
Four IP numbers are pointed to by substack.com: 2606:4700:4400::ac40:9638, 2606:4700:440b::6812:25c8, 104.18.37.200 and 172.64.150.56.
other host names including caitlinjohnstone.substack.com, officialexpediahelp.substack.com, the-problem-isnt-delayed-possession.p.sportslandactivityfarms.pub.open.substack.com, fun88india.substack.com and clintonlmcvicker.substack.com share IP numbers with substack.com.
substack.com is delegated to two name servers ali.ns.cloudflare.com and lee.ns.cloudflare.com.
substack.com shares the same name server setup as other domains, for instance substack.link, vzsp.ru, kafein.org, jkpcoin.com and randompress.net.
substack.com at least partially shares name servers with other domains, for instance fourscale.com, austinmoms.com, communionmusic.co.uk, articlequery.com and hillromdifference.com.
Host names with six IP numbers:
Host name 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.
Host name 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.
Two mail servers handle substack.com: mxa.mailgun.org and mxb.mailgun.org.
substack.com shares the same mail server setup as other domains, for instance mason-rose.ca, post.leadhit.ru, z.teachablemail.com, buycoins.ca and philadelphiavotes.com.
substack.com shares some mail servers with other domains, at least partially, for instance lokobuzz.com, myoneoffer.com, ihtspirit.com, sitetor.com and ketengo.com.
these mail servers are often used together with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
Host names with a single IP:
mxa.mailgun.org points to 34.160.13.42.
mxb.mailgun.org points to 34.160.13.42.
Host names pointing to 34.160.13.42: mxa.mailgun.org and mxb.mailgun.org.