ossbook.co.kr - robtex.com
ossbook.co.kr
co.kr
| DNSSEC | ⚠️ Not signed | ||||||
| NS | g.dns.kr ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | c.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | d.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | e.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | f.dns.kr ⚠️ Not in parent delegation | ||||||
| SOA | g.dns.krdomain-manager@nic.or.kr serial=2608100611 | ||||||
Subdomains
www.ossbook.co.kr |
Same first word
Similar names
osbooks.org |
booksos.com |
sobooks.de |
osbooks.com |
sobooks.cc |
sosbook.com |
sobooks.jp |
okbooss.blogspot.com |
sobooks.tw |
ssobook.com |
sobooks.com |
kossobo.com |
sobooks.info |
sobooks.net |
DNS History
6 records (6 active, 0 former)
●NSns-1438.awsdns-51.org2026-03-01 → 2026-08-10 · 2 obs
● 2026-08-10 02:45:34
●NSns-1975.awsdns-54.co.uk2026-03-01 → 2026-08-10 · 2 obs
● 2026-08-10 02:45:34
●NSns-304.awsdns-38.com2026-03-01 → 2026-08-10 · 2 obs
● 2026-08-10 02:45:34
●NSns-786.awsdns-34.net2026-03-01 → 2026-08-10 · 2 obs
● 2026-08-10 02:45:34
●MXsmtp.osstem.com2026-03-01 → 2026-08-10 · 2 obs
● 2026-08-10 02:45:34
●A117.52.95.1352026-03-01 → 2026-08-10 · 2 obs
● 2026-08-10 02:45:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | 10 records |
| ossbook.co.kr | ns-1438.awsdns-51.org, ns-786.awsdns-34.net, ns-304.awsdns-38.com, ns-1975.awsdns-54.co.uk | - |
✅ Authoritative Response
Server:205.251.197.158
NS records: ns-1438.awsdns-51.org, ns-786.awsdns-34.net, ns-304.awsdns-38.com, ns-1975.awsdns-54.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ossbook.co.kr (unsigned zone)
⏱️ Timing
Total: 957ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 117.52.95.135 |
| NS | 4 | ns-1438.awsdns-51.org, ns-1975.awsdns-54.co.uk... |
| MX | 1 | smtp.osstem.com (pri: 10) |
| SOA | 1 | ns-786.awsdns-34.net awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 10
In-bailiwick: 10 (b.dns.kr, c.dns.kr, d.dns.kr...)
Analysis
Hierarchy
www.ossbook.co.kr is delegated beneath ossbook.co.kr.
IP Addresses
ossbook.co.kr points to a single IP number: 117.52.95.135.
www.ossbook.co.kr, for instance, is one of the other host names sharing IP numbers with ossbook.co.kr.
Name Servers
ossbook.co.kr has four authoritative name servers: ns-304.awsdns-38.com, ns-786.awsdns-34.net, ns-1438.awsdns-51.org and ns-1975.awsdns-54.co.uk.
There is at least partial name server overlap between ossbook.co.kr and other domains — bagomundial.com, 38.43.103.in-addr.arpa, wulanji.com and two more among them.
The name servers ns-127.awsdns-15.com, ns-1002.awsdns-61.net and ns-1399.awsdns-46.org are often found in combination with these name servers.
All four hostnames — ns-304.awsdns-38.com, ns-786.awsdns-34.net, ns-1438.awsdns-51.org and ns-1975.awsdns-54.co.uk — resolve to two IP numbers apiece: ns-304.awsdns-38.com to 205.251.193.48 and 2600:9000:5301:3000::1; ns-786.awsdns-34.net to 205.251.195.18 and 2600:9000:5303:1200::1; ns-1438.awsdns-51.org to 205.251.197.158 and 2600:9000:5305:9e00::1; ns-1975.awsdns-54.co.uk to 205.251.199.183 and 2600:9000:5307:b700::1.
Mail Servers
ossbook.co.kr has one mail server: smtp.osstem.com.
Like osstem.com.tw and osstem.com, ossbook.co.kr has the same mail server arrangement as several other domains.
smtp.osstem.com directs to just one IP number, 117.52.95.25.