knowb4u.com - robtex.com
knowb4u.com
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=1774706152 | ||||||
Same first word
knowb4u.com |
DNS History
8 records (8 active, 0 former)
●NSns1028.ui-dns.biz2026-02-17 → 2026-03-28 · 2 obs
● 2026-03-28 14:16:54
●NSns1067.ui-dns.org2026-02-17 → 2026-03-28 · 2 obs
● 2026-03-28 14:16:54
●NSns1110.ui-dns.com2026-02-17 → 2026-03-28 · 2 obs
● 2026-03-28 14:16:54
●A2607:f1c0:100f:f000::2002026-02-17 → 2026-03-28 · 2 obs
● 2026-03-28 14:16:54
●A74.208.236.82026-02-17 → 2026-03-28 · 2 obs
● 2026-03-28 14:16:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| knowb4u.com | ns1067.ui-dns.org, ns1069.ui-dns.de, ns1028.ui-dns.biz, ns1110.ui-dns.com | 2 records |
✅ Authoritative Response
Server:217.160.83.67
NS records: ns1067.ui-dns.org, ns1069.ui-dns.de, ns1028.ui-dns.biz, ns1110.ui-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for knowb4u.com (unsigned zone)
⏱️ Timing
Total: 508ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 74.208.236.8 |
| AAAA | 1 | 2607:f1c0:100f:f000::200 |
| NS | 4 | ns1069.ui-dns.de, ns1028.ui-dns.biz... |
| MX | 2 | mx00.ionos.com (pri: 10), mx01.ionos.com (pri: 10) |
| TXT | 1 | v=spf1 include:_spf-us.ionos.com ~all |
| SOA | 1 | ns1028.ui-dns.biz hostmaster.1und1.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1110.ui-dns.com, ns1110.ui-dns.com)
Analysis
IP Addresses
knowb4u.com points to two IP numbers: 2607:f1c0:100f:f000::200 and 74.208.236.8.
Other host names, for instance natural-passages.com, www.icasc.co, ericferlito.com, dadsofhonor.com and rehobothbaptist.net share IP numbers with knowb4u.com.
Name Servers
knowb4u.com is delegated to four name servers: ns1028.ui-dns.biz, ns1110.ui-dns.com, ns1069.ui-dns.de and ns1067.ui-dns.org.
knowb4u.com at least partially shares its name servers with other domains, for instance actioplan.com, arztpraxis-becker.de, dataforum.at, springm.de and baitz.de.
These name servers are commonly used with ns1110.ui-dns.biz, ns1110.ui-dns.de, ns1110.ui-dns.org, ns1069.ui-dns.biz, ns1069.ui-dns.org, ns1069.ui-dns.com, ns1028.ui-dns.de, ns1028.ui-dns.com, ns1028.ui-dns.org and ns1067.ui-dns.biz.
Host names with two IPs: ns1028.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:511c:100 and 217.160.81.28; ns1110.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:526e:100 and 217.160.82.110; ns1069.ui-dns.de points to 2607:f1c0:fe:53:185:132:32:69 and 217.160.80.69; ns1067.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:5343:100 and 217.160.83.67.
Mail Servers
Two mail servers mx00.ionos.com and mx01.ionos.com handle knowb4u.com.
knowb4u.com uses the same mail server setup as other domains such as e-echocardiography.com, webticing.com, sonlitdesign.com, briankim.tv and watpacph.org.
knowb4u.com shares some mail servers with other domains at least partially, for example marketcast.co.
Host names with a single IP:
mx00.ionos.com resolves to 74.208.5.3.
mx01.ionos.com resolves to 74.208.5.21.