learnbook.com.cn - robtex.com
learnbook.com.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns1.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
com.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2030568697 | ||||||
Same first word
learnbook.net |
learnbook.se |
learnbook.com.tw |
learnbook.ru |
learnbook.com.cn |
learnbook.co.za |
learnbook.com.au |
learnbook.com |
Similar names
blankeroo.com |
brooklane.net |
ronakobel.de |
kobolearn.com |
brooklane.co.uk |
brooklane.com.au |
brookneal.net |
brooklane.org |
DNS History
13 records (4 active, 9 former)
○NSf1g1ns1.dnspod.net2017-03-20 → 2017-03-20 · 3 obs
○ 2020-03-16 06:42:02
○ 2026-05-14 21:37:42
○NSf1g1ns2.dnspod.net2017-03-20 → 2017-03-20 · 3 obs
○ 2020-03-16 06:42:02
○ 2026-05-14 21:37:42
○NSns1-domain-expired.myhostadmin.net2026-03-30 → 2026-03-30 · 3 obs
● 2026-03-30 23:25:04
○ 2026-05-14 21:37:42
○NSns1.dnsnw.com2020-03-16 → 2020-03-16 · 4 obs
● 2020-03-16 06:42:02
○ 2026-03-30 23:25:04
○ 2026-05-14 21:37:42
●NSns1.julydns.com2026-05-14 → 2026-05-14 · 2 obs
● 2026-05-14 21:37:42
○NSns2-domain-expired.myhostadmin.net2026-03-30 → 2026-03-30 · 3 obs
● 2026-03-30 23:25:04
○ 2026-05-14 21:37:42
○NSns2.dnsnw.com2020-03-16 → 2020-03-16 · 4 obs
● 2020-03-16 06:42:02
○ 2026-03-30 23:25:04
○ 2026-05-14 21:37:42
●NSns2.julydns.com2026-05-14 → 2026-05-14 · 2 obs
● 2026-05-14 21:37:42
○A128.14.74.1072026-03-30 → 2026-03-30 · 3 obs
● 2026-03-30 23:25:04
○ 2026-05-14 21:37:42
○A128.14.74.1242026-03-30 → 2026-03-30 · 3 obs
● 2026-03-30 23:25:04
○ 2026-05-14 21:37:42
○A155.159.88.1722020-03-16 → 2020-03-16 · 3 obs
○ 2026-03-30 23:25:04
○ 2026-05-14 21:37:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| learnbook.com.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for learnbook.com.cn (unsigned zone)
⏱️ Timing
Total: 2513ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
Analysis
Name Servers
learnbook.com.cn's delegation is handled by four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
learnbook.com.cn partially shares name servers with other domains; examples include mfwlyx.com, zgxqjs.com, loans-area.com, yanjiandi.com and putmap.com.
These name servers are often used with the name servers jm1.dns.com and jm2.dns.com.
Host names sharing a single IP address:
ns1.judns.com points to: 162.159.27.251.
ns2.judns.com points to: 162.159.27.251.
ns1.julydns.com points to: 162.159.48.223.
ns2.julydns.com points to: 162.159.48.223.
Host names pointing to 162.159.27.251: ns1.judns.com and ns2.judns.com.
Host names pointing to 162.159.48.223: ns1.julydns.com and ns2.julydns.com.