tzdbt.cn - robtex.com
tzdbt.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 154.203.107.87🇭🇰 GNET-AS9294154.203.96.0/20 | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| 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 | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1754296019 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034595402 | ||||||
Same first word
Similar names
DNS History
13 records (5 active, 8 former)
○NSdns15.hichina.com2015-07-15 → 2017-03-21 · 4 obs
● 2017-03-21 07:03:32
○ 2020-03-10 06:00:46
○ 2026-03-27 19:34:22
○NSdns16.hichina.com2015-07-15 → 2017-03-21 · 4 obs
● 2017-03-21 07:03:32
○ 2026-02-27 13:18:48
○ 2026-03-27 19:34:22
●NSns1.judns.com2026-02-27 → 2026-03-27 · 3 obs
● 2026-02-27 13:18:48
● 2026-03-27 19:34:22
●NSns1.julydns.com2026-02-27 → 2026-03-27 · 3 obs
● 2026-02-27 13:18:48
● 2026-03-27 19:34:22
○NSns1.tzdbt.cn2020-03-10 → 2020-03-10 · 4 obs
● 2020-03-10 06:00:46
○ 2026-02-27 13:18:48
○ 2026-03-27 19:34:22
●NSns2.judns.com2026-02-27 → 2026-03-27 · 3 obs
● 2026-02-27 13:18:48
● 2026-03-27 19:34:22
●NSns2.julydns.com2026-02-27 → 2026-03-27 · 3 obs
● 2026-02-27 13:18:48
● 2026-03-27 19:34:22
○MXmx.enterprise.china.alibaba.com2015-07-15 → 2017-03-21 · 4 obs
● 2017-03-21 07:03:32
○ 2026-02-27 13:18:48
○ 2026-03-27 19:34:22
○MXmx2.enterprise.china.alibaba.com2015-07-15 → 2017-03-21 · 4 obs
● 2017-03-21 07:03:32
○ 2026-02-27 13:18:48
○ 2026-03-27 19:34:22
○MXmx3.enterprise.china.alibaba.com2015-07-15 → 2017-03-21 · 4 obs
● 2017-03-21 07:03:32
○ 2026-02-27 13:18:48
○ 2026-03-27 19:34:22
○A110.173.196.12015-07-15 → 2017-03-21 · 4 obs
● 2017-03-21 07:03:32
○ 2020-03-10 06:00:46
○ 2026-03-27 19:34:22
○A117.120.60.802020-03-10 → 2020-03-10 · 4 obs
● 2020-03-10 06:00:46
○ 2026-02-27 13:18:48
○ 2026-03-27 19:34:22
●A154.203.107.872026-02-27 → 2026-03-27 · 3 obs
● 2026-02-27 13:18:48
● 2026-03-27 19:34:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| tzdbt.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 tzdbt.cn (unsigned zone)
⏱️ Timing
Total: 1579ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.203.107.87 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
tzdbt.cn points to a single IP number: 154.203.107.87.
Other host names such as 360bf.cn and hrgf.net share IP numbers with tzdbt.cn.
Name Servers
tzdbt.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
tzdbt.cn at least partially shares name servers with other domains, for instance tshhgd.cn, wbdpcfp.cn, haoriyu.com, heychoc.com and sfunr.com.
Host names with a single IP number:
ns1.judns.com points to: 47.97.51.45.
ns2.judns.com points to: 162.159.27.251.
ns1.julydns.com points to: 47.97.51.45.
ns2.julydns.com points to: 162.159.48.223.
Host names that point to 47.97.51.45: ns1.judns.com and ns1.julydns.com.