WWW.RTSAK.COM - class4.us
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class4.us checked at 2025-10-03T15:43:35.310Z 128ms 112/112/112 100% R:13class4.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: 74.208.40.39.
class4.us's delegation is to two name servers dara.ns.cloudflare.com and doug.ns.cloudflare.com.
class4.us shares the same name server configuration as other domains, such as konordo.com, cardsproject.com, skewcoders.com, cadow.net and edbrite.net.
class4.us at least partially shares its name servers with other domains, for instance celibkambox.com, emplanta.com, coolhostplus.net, icenes2007.org and cosmostv.org.
These name servers are commonly 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.
Two mail servers mx00.1and1.com and mx01.1and1.com handle class4.us.
class4.us uses the same mail server setup as other domains such as 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 a single IP:
mx00.1and1.com resolves to 74.208.5.3.
mx01.1and1.com resolves to 74.208.5.21.