koster.cn - robtex.com
koster.cn
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 2035-09-17 #51 | ||||||
Same first word
Similar names
DNS History
11 records (5 active, 6 former)
○NSce1.dns.com2019-02-14 → 2019-02-14 · 4 obs
● 2019-02-14 02:00:46
○ 2026-07-19 12:01:58
○ 2026-07-26 05:43:28
●NSce1.xincache.com2026-07-19 → 2026-07-26 · 3 obs
● 2026-07-19 12:01:58
● 2026-07-26 05:43:28
○NSce2.dns.com2019-02-14 → 2019-02-14 · 4 obs
● 2019-02-14 02:00:46
○ 2026-07-19 12:01:58
○ 2026-07-26 05:43:28
●NSce2.xincache.com2026-07-19 → 2026-07-26 · 3 obs
● 2026-07-19 12:01:58
● 2026-07-26 05:43:28
○NSns1.ce.net.cn2015-07-03 → 2016-12-28 · 4 obs
● 2016-12-28 06:36:46
○ 2019-02-14 02:00:46
○ 2026-07-26 05:43:28
○NSns2.ce.net.cn2015-11-04 → 2016-12-28 · 5 obs
● 2015-11-04 22:22:36
● 2016-12-28 06:36:46
○ 2019-02-14 02:00:46
○ 2026-07-26 05:43:28
●MXqiye163mx01.mxmail.netease.com2015-07-03 → 2026-07-26 · 2 obs
● 2026-07-26 05:43:28
●MXqiye163mx02.mxmail.netease.com2015-07-03 → 2026-07-26 · 2 obs
● 2026-07-26 05:43:28
○A106.185.26.1592016-12-28 → 2016-12-28 · 4 obs
● 2016-12-28 06:36:46
○ 2019-02-14 02:00:46
○ 2026-07-26 05:43:28
●A118.193.166.1452019-02-14 → 2026-07-26 · 3 obs
● 2019-02-14 02:00:46
● 2026-07-26 05:43:28
○A183.60.188.2402015-07-03 → 2016-04-11 · 4 obs
● 2016-04-11 17:32:14
○ 2016-12-28 06:36:46
○ 2026-07-26 05:43:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| koster.cn | ce1.xincache.com, ce2.xincache.com | - |
✅ Authoritative Response
Server:2402:4e00:111:fff::c
NS records: ce1.xincache.com, ce2.xincache.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for koster.cn (unsigned zone)
⏱️ Timing
Total: 3438ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 118.193.166.145 |
| NS | 2 | ce2.xincache.com, ce1.xincache.com |
| MX | 2 | qiye163mx01.mxmail.netease.com (pri: 10), qiye163mx02.mxmail.netease.com (pri: 50) |
| TXT | 1 | v=spf1 include:spf.163.com ~all |
| SOA | 1 | ce1.xincache.com enterprise1dnsadmin.dns |
Analysis
IP Addresses
koster.cn resolves to one IP address: 118.193.166.145.
Name Servers
koster.cn is served by two delegated name servers, ce1.xincache.com and ce2.xincache.com.
koster.cn uses the same name servers as several other domains — among them zjjunhua.com, prajia.cn, jonnyma.cn and two more.
The name servers of koster.cn overlap at least partially with those of other domains — among them gzjmbk.com, jinhaiyun.com.cn, xxgd.com and two more.
These name servers commonly appear alongside the name servers ns11.xincache.com and f1g1ns1.dnspod.net.
Hostnames that resolve to 7 IP addresses:
ce1.xincache.com carries IP addresses 1.12.0.4, 112.80.181.45 and 117.89.178.173, with 4 other addresses beyond those.
Hostnames that resolve to 6 IP addresses:
ce2.xincache.com carries IP addresses 1.12.0.1, 117.89.178.184 and 117.135.128.235, with 3 other addresses beyond those.
These two host names — ce1.xincache.com and ce2.xincache.com — each point to 117.135.128.235 IP addresses.
Mail Servers
Mail for koster.cn is handled by two mail servers — qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com.
koster.cn uses an identical mail server configuration to several other domains — among them hankeit.com, yitours.com, luexpo.com and two more.
koster.cn has at least partial mail server overlap with other domains such as smtven.com, sztomstar.com, sdgsgcjsjt.com and two more.
The host names qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com both direct to 47.251.71.119 and 47.251.84.126.
These two host names — qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com — each point to 47.251.71.119 IP addresses.
These two host names — qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com — each point to 47.251.84.126 IP addresses.