MXLIST.NET - 4optimal.de
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4optimal.de checked at 2025-11-04T07:58:09.713Z 289ms 99/99/99 100% R:154optimal.de
| MX | mail.4optimal.de | ||||||
| A | 91.204.46.48🇩🇪 netcup-AS | ||||||
| PTR | mx2e30.netcup.net | ||||||
| MX | mx2e30.netcup.net | ||||||
| A | 2a03:4000:0:3b0:3840:e0ff:fe17:54b3 🇩🇪 netcup-AS | ||||||
| PTR | mx2e30.netcup.net | ||||||
| A | 91.204.46.48🇩🇪 netcup-AS | ||||||
| PTR | mx2e30.netcup.net | ||||||
| NS | root-dns.netcup.net | ||||||
| A | 2a03:4000:0:1::e1e1 🇩🇪 netcup-AS | ||||||
| PTR | root-dns.netcup.net | ||||||
| A | 46.38.225.225🇩🇪 netcup-AS | ||||||
| PTR | root-dns.netcup.net | ||||||
| NS | second-dns.netcup.net | ||||||
| A | 2a03:4000:2:24b::c7c7 🇩🇪 netcup-AS | ||||||
| PTR | second-dns.netcup.net | ||||||
| A | 37.221.199.199🇩🇪 netcup-AS | ||||||
| PTR | second-dns.netcup.net | ||||||
| NS | third-dns.netcup.net | ||||||
| A | 2a03:4001:0:106::3f44 🇩🇪 netcup-AS | ||||||
| PTR | third-dns.netcup.net | ||||||
| A | 188.68.63.68🇩🇪 netcup-AS | ||||||
| PTR | third-dns.netcup.net | ||||||
| A | 2a03:4000:30:c265::15:510 🇩🇪 netcup-AS | ||||||
| A | 91.204.46.46🇩🇪 netcup-AS | ||||||
| PTR | a2e2e.netcup.net | ||||||
de
| NS | a.nic.de | ||||||
| NS | f.nic.de | ||||||
| NS | z.nic.de | ||||||
| NS | l.de.net | ||||||
| NS | n.de.net | ||||||
| NS | s.de.net | ||||||
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Starts with same word
4optimal.de | 
Starts similarily
AI analysis
4optimal.de is a parent of v3a.4optimal.de, mail.4optimal.de and o3.4optimal.de.
4optimal.de has two IP numbers: 2a03:4000:30:c265::15:510 and 91.204.46.46.
Other host names, for instance humanchip.de, richterb.net, alural.de, werkzeug-gruppe.de and ruup.de share IP numbers with 4optimal.de. 
4optimal.de is delegated to three name servers: root-dns.netcup.net, second-dns.netcup.net and third-dns.netcup.net.
4optimal.de at least partially shares name servers with other domains, including ecoci.de, cps.de, rosch-consulting.de, geuner-networks.de and 4sich.de.
Host names with two IP numbers:
root-dns.netcup.net: 2a03:4000:0:1::e1e1 and 46.38.225.225
second-dns.netcup.net: 2a03:4000:2:24b::c7c7 and 37.221.199.199
third-dns.netcup.net: 2a03:4001:0:106::3f44 and 188.68.63.68
4optimal.de is served by two mail servers mail.4optimal.de and mx2e30.netcup.net.
4optimal.de shares at least some mail servers with other domains, for example dobesch.de, mcgoofys.de, familienplaner.at, eboarder.de and e-gosch.de.
These mail servers are often used together with the mail servers mail.dobesch.de. 
Host names with two IP numbers:
mx2e30.netcup.net points to 2a03:4000:0:3b0:3840:e0ff:fe17:54b3 and 91.204.46.48.
Host names with one IP number:
mail.4optimal.de points to 91.204.46.48.
Host names that point to 91.204.46.48: mx2e30.netcup.net and mail.4optimal.de.