knowcentury.com - robtex.com
knowcentury.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 46.105.103.140🇫🇷 OVH46.105.0.0/16 ISP Paris, France | ||||||
| PTR | ns383235.knowcentury.com | ||||||
| NS | dns3.servidoresdns.net ⭐ | ||||||
| A | 217.76.128.129🇪🇸 IONOS-AS217.76.128.0/19 arsys.es | ||||||
| PTR | dns3.servidoresdns.net | ||||||
| NS | dns4.servidoresdns.net | ||||||
| A | 82.223.218.147🇪🇸 IONOS-AS82.223.0.0/16 arsys.es | ||||||
| PTR | dns4.servidoresdns.net | ||||||
| MX | mx.serviciodecorreo.es ⭐ | ||||||
| A | 82.223.190.100🇪🇸 IONOS-AS82.223.0.0/16 arsys.es | ||||||
| PTR | mx.serviciodecorreo.es | ||||||
| TXT | v=spf1 mx a ip4:90.173.124.248 include:_spf.serviciodecorreo.es include:_spf.... | ||||||
| SOA | dns3.servidoresdns.nethostmaster@servidoresdns.net serial=2001103837 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1776058567 | ||||||
Subdomains
Same first word
knowcentury.com |
DNS History
5 records (4 active, 1 former)
●NSdns3.servidoresdns.net2015-07-24 → 2026-04-13 · 2 obs
● 2026-04-13 05:53:00
●NSdns4.servidoresdns.net2015-07-24 → 2026-04-13 · 2 obs
● 2026-04-13 05:53:00
●MXmx.serviciodecorreo.es2026-03-10 → 2026-04-13 · 3 obs
● 2026-03-10 17:48:34
● 2026-04-13 05:53:00
○MXsmtp-02.servidoresdns.net2015-07-24 → 2017-05-18 · 4 obs
● 2017-05-18 04:31:18
○ 2026-03-10 17:48:34
○ 2026-04-13 05:53:00
●A46.105.103.1402015-07-24 → 2026-04-13 · 2 obs
● 2026-04-13 05:53:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| knowcentury.com | dns3.servidoresdns.net, dns4.servidoresdns.net | - |
✅ Authoritative Response
Server:82.223.218.147
NS records: dns3.servidoresdns.net, dns4.servidoresdns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for knowcentury.com (unsigned zone)
⏱️ Timing
Total: 503ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 46.105.103.140 |
| NS | 2 | dns3.servidoresdns.net, dns4.servidoresdns.net |
| MX | 1 | mx.serviciodecorreo.es (pri: 10) |
| TXT | 1 | v=spf1 mx a ip4:90.173.124.248 include:_ |
| SOA | 1 | dns3.servidoresdns.net hostmaster.servid |
Analysis
Hierarchy
knowcentury.com is the parent of aonmail.knowcentury.com, j27.knowcentury.com and ns383235.knowcentury.com.
IP Addresses
knowcentury.com resolves to one IP number: 46.105.103.140.
Other host names such as ns383235.knowcentury.com and farmagoya.com share IP numbers with knowcentury.com.
Name Servers
knowcentury.com is delegated to two name servers dns3.servidoresdns.net and dns4.servidoresdns.net.
knowcentury.com shares the same name server setup as other domains, for instance tiatools.com, mundomarino.net, emergensa.es, elpote.es and ee-pp.com.
knowcentury.com at least partially shares name servers with other domains, for instance mismb.net.
Host names with one IP number:
dns3.servidoresdns.net points to 217.76.128.129
dns4.servidoresdns.net points to 82.223.218.147
Mail Servers
knowcentury.com is handled by a single mail server, mx.serviciodecorreo.es.
knowcentury.com shares the same mail server setup as other domains, for instance audiotec.es, tienda-shop.es, obcocinas.fr, rutadelvinocastellon.com and vgconsulting.net.
knowcentury.com shares some mail servers with other domains, at least partially, for example serviagro.es and movilfirma.es.
mx.serviciodecorreo.es resolves to IP 82.223.190.100.