WWW.ROBTEX.COM - challenge21.de
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challenge21.de checked at 2025-10-17T05:18:32.745Z 768ms 117/117/117 100% R:11challenge21.de
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 | ||||||
Starts with same word
challenge21.de |
Starts similarily
challenge21.de |
AI analysis
challenge21.de points to a single IP number: 91.208.160.41.
Other host names, for instance hausarztverband.de, dasmathematikbuch.de, sydkraft.de, www.gaspool.de and rurnetz.de share IP numbers with challenge21.de.
challenge21.de is delegated to four name servers: n01.public.auth.dns.services.k-net.io, n02.public.auth.dns.services.k-net.io, n03.public.auth.dns.services.k-net.io and n04.public.auth.dns.services.k-net.io.
challenge21.de shares name servers with other domains at least partially, for instance xn--testen-und-frdern-b0b.de, vpm-verlag.de, schul-start.de, myklett.de and zahlenbuchfanclub.de.
Host names with two IP numbers:
n01.public.auth.dns.services.k-net.io resolves to 2001:4178:3:a357:62:116:159:4 and 62.116.159.4.
n02.public.auth.dns.services.k-net.io resolves to 2001:8d8:580:401:217:160:113:37 and 217.160.113.37.
n03.public.auth.dns.services.k-net.io resolves to 2a01:130:2000:118:89:146:248:4 and 89.146.248.4.
n04.public.auth.dns.services.k-net.io resolves to 2607:f1c0:1800:8091:74:208:254:4 and 74.208.254.4.