secondhandknowledge.com - dns.ninja
secondhandknowledge.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 50.193.90.185🇺🇸 COMCAST-IBONE50.128.0.0/9 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 | ||||||
| PTR | 50-193-90-185-static.hfc.comcastbusiness.net | ||||||
| NS | ns1.lightningwave.net ⭐ | ||||||
| A | 68.70.169.131🇺🇸 AS2245868.70.169.0/24 | ||||||
| NS | ns2.lightningwave.net | ||||||
| A | 68.70.169.132🇺🇸 AS2245868.70.169.0/24 | ||||||
| PTR | ns2.lightningwave.net | ||||||
| MX | mail.mad-seumas.net ⭐ | ||||||
| A | 50.193.90.185🇺🇸 COMCAST-IBONE50.128.0.0/9 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 | ||||||
| PTR | 50-193-90-185-static.hfc.comcastbusiness.net | ||||||
| SOA | ns1.lightningwave.nethostmaster@secondhandknowledge.net 2026-10-04 #1 | ||||||
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=1792704231 | ||||||
Same first word
secondhandknowledge.ca |
secondhandknowledge.net |
secondhandknowledge.com |
Previous names
Next names
DNS History
4 records (4 active, 0 former)
●NSns1.lightningwave.net2015-06-08 → 2026-10-22 · 2 obs
● 2026-10-22 21:52:20
●NSns2.lightningwave.net2015-06-08 → 2026-10-22 · 2 obs
● 2026-10-22 21:52:20
●MXmail.mad-seumas.net2015-06-08 → 2026-10-22 · 2 obs
● 2026-10-22 21:52:20
●A50.193.90.1852015-06-08 → 2026-10-22 · 2 obs
● 2026-10-22 21:52:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net, j.gtld-servers.net... | - |
| secondhandknowledge.com | ns1.lightningwave.net, ns2.lightningwave.net | - |
✅ Authoritative Response
Server:68.70.169.131
NS records: ns1.lightningwave.net, ns2.lightningwave.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for secondhandknowledge.com (unsigned zone)
⏱️ Timing
Total: 1142ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 50.193.90.185 |
| NS | 2 | ns2.lightningwave.net, ns1.lightningwave.net |
| MX | 1 | mail.mad-seumas.net (pri: 10) |
| SOA | 1 | ns1.lightningwave.net hostmaster.secondh |
Analysis
IP Addresses
secondhandknowledge.com directs to one IP number, which is 50.193.90.185.
secondhandknowledge.net, mail.mad-seumas.net and jvrsoft.com are examples of other host names that share IP numbers with secondhandknowledge.com.
Name Servers
secondhandknowledge.com has two authoritative name servers — ns1.lightningwave.net and ns2.lightningwave.net.
secondhandknowledge.com has the same name server delegation as a number of other domains, such as lightningwave.net, secondhandknowledge.net, lightningwave.com and two more.
ns1.lightningwave.net and ns2.lightningwave.net each resolve to one IP number: ns1.lightningwave.net points to 68.70.169.131 and ns2.lightningwave.net points to 68.70.169.132.
Mail Servers
secondhandknowledge.com routes its mail through a single mail server, mail.mad-seumas.net.
mail.mad-seumas.net points to one IP number — 50.193.90.185.