selfhelpbooks.net - robtex.com
selfhelpbooks.net
| DNSSEC | ⚠️ Not signed | ||||||
| NS | mail9th1.barnesandnoble.com ⚠️ Not in zone NS records | ||||||
| A | 161.221.74.77🇺🇸 BARNES_And_NOBLE161.221.74.0/24 | ||||||
| NS | ns2.barnesandnoble.com ⚠️ Not in zone NS records | ||||||
| A | 161.221.74.78🇺🇸 BARNES_And_NOBLE161.221.74.0/24 | ||||||
| NS | ns3.barnesandnoble.com ⚠️ Not in zone NS records | ||||||
| A | 65.204.48.77🇺🇸 BARNES_And_NOBLE65.204.48.0/24 Prolexic Technologies, Inc. | ||||||
| NS | ns4.barnesandnoble.com ⚠️ Not in zone NS records | ||||||
| A | 65.204.48.80🇺🇸 BARNES_And_NOBLE65.204.48.0/24 Prolexic Technologies, Inc. | ||||||
net
| 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=1774846082 | ||||||
Same first word
selfhelpbooks.org |
selfhelpbooks.net |
DNS History
4 records (4 active, 0 former)
●NSmail9th1.barnesandnoble.com2026-03-15 → 2026-03-30 · 2 obs
● 2026-03-30 04:51:00
●NSns2.barnesandnoble.com2026-03-15 → 2026-03-30 · 2 obs
● 2026-03-30 04:51:00
●NSns3.barnesandnoble.com2026-03-15 → 2026-03-30 · 2 obs
● 2026-03-30 04:51:00
●NSns4.barnesandnoble.com2026-03-15 → 2026-03-30 · 2 obs
● 2026-03-30 04:51:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| selfhelpbooks.net | mail9th1.barnesandnoble.com, ns2.barnesandnoble.com, ns3.barnesandnoble.com, ns4.barnesandnoble.com | - |
✅ Authoritative Response
Server:161.221.74.78
NS records: mail9th1.barnesandnoble.com, ns2.barnesandnoble.com, ns3.barnesandnoble.com, ns4.barnesandnoble.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for selfhelpbooks.net (unsigned zone)
⏱️ Timing
Total: 185ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
selfhelpbooks.net is delegated to four name servers: mail9th1.barnesandnoble.com, ns2.barnesandnoble.com, ns3.barnesandnoble.com and ns4.barnesandnoble.com.
selfhelpbooks.net at least partially shares name servers with other domains, for instance barnesandnoblepublishers.com, mynookkids.com, waterstonesbarnesandnobleworkers.com, tatteredcoverworkers.org and pondviewassociates.com.
these name servers are often used in conjunction with the name servers pnjmasterns01.barnesandnoble.com.
Host names with one IP number:
mail9th1.barnesandnoble.com points to 161.221.74.77.
ns2.barnesandnoble.com points to 161.221.74.78.
ns3.barnesandnoble.com points to 65.204.48.77.
ns4.barnesandnoble.com points to 65.204.48.80.