MXLIST.NET - class4.us
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class4.us checked at 2025-10-18T16:07:42.681Z 424ms 112/112/112 100% R:11class4.us
| MX | mx00.1and1.com | ||||||
| A | 74.208.5.3🇺🇸 IONOS SE | ||||||
| PTR | mx00.perfora.net | ||||||
| MX | mx01.1and1.com | ||||||
| A | 74.208.5.21🇺🇸 IONOS SE | ||||||
| PTR | mx01.perfora.net | ||||||
| NS | dara.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a5b 🇺🇸 Cloudflare | ||||||
| PTR | dara.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c05b 🇨🇷 Cloudflare | ||||||
| PTR | dara.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:205b 🇺🇸 Cloudflare | ||||||
| PTR | dara.ns.cloudflare.com | ||||||
| A | 108.162.192.91🇺🇸 Cloudflare | ||||||
| PTR | dara.ns.cloudflare.com | ||||||
| A | 172.64.32.91🇺🇸 Cloudflare | ||||||
| PTR | dara.ns.cloudflare.com | ||||||
| A | 173.245.58.91🇺🇸 Cloudflare | ||||||
| PTR | dara.ns.cloudflare.com | ||||||
| NS | doug.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b9f 🇺🇸 Cloudflare | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c19f 🇨🇷 Cloudflare | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:219f 🇺🇸 Cloudflare | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 108.162.193.159🇺🇸 Cloudflare | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 172.64.33.159🇺🇸 Cloudflare | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 173.245.59.159🇺🇸 Cloudflare | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 74.208.40.39🇺🇸 IONOS SE | ||||||
us
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
Starts with same word
Starts similarily
AI analysis
class4.us points to a single IP number: 74.208.40.39.
class4.us is delegated to two name servers: dara.ns.cloudflare.com and doug.ns.cloudflare.com.
class4.us uses the same name server setup as other domains, for instance konordo.com, cardsproject.com, cadow.net, edbrite.net and wizziweb.net.
class4.us shares name servers with other domains at least partially, for instance celibkambox.com, emplanta.com, coolhostplus.net, icenes2007.org and cosmostv.org.
these name servers are often used with chan.ns.cloudflare.com, coen.ns.cloudflare.com and dom.ns.cloudflare.com.
Host names with six IP numbers: dara.ns.cloudflare.com points to 2606:4700:50::adf5:3a5b, 2803:f800:50::6ca2:c05b, 2a06:98c1:50::ac40:205b, 108.162.192.91, 172.64.32.91 and 173.245.58.91; doug.ns.cloudflare.com points to 2606:4700:58::adf5:3b9f, 2803:f800:50::6ca2:c19f, 2a06:98c1:50::ac40:219f, 108.162.193.159, 172.64.33.159 and 173.245.59.159.
class4.us is handled by two mail servers: mx00.1and1.com and mx01.1and1.com.
class4.us shares the same mail server setup as other domains, including marteva.net, bukupet.com, house2.com, s104783467.onlinehome.us and s216675544.onlinehome.us.
class4.us shares some mail servers with other domains, including 2dcc.com, u16192246.onlinehome-server.com, u22415129.onlinehome-server.com, proyouthheart.com and pediatricstexas.com.
Host names with one IP number:
mx00.1and1.com points to: 74.208.5.3.
mx01.1and1.com points to: 74.208.5.21.