coserm.cn - robtex.com
coserm.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | brandon.dnspod.net ⭐ | ||||||
| A | 2402:4e00:1470:2::e🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40 | ||||||
| A | 1.12.0.4🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM | ||||||
| A | 1.14.119.35🇨🇳 TENCENT-NET-AP1.14.64.0/18 | ||||||
| A | 111.13.13.35🇨🇳 CHINAMOBILE-CN111.13.0.0/16 CMI (Customer Route) | ||||||
| A | 117.89.178.35🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC | ||||||
| A | 220.196.136.35🇨🇳 UNICOM-SHFT-IDC220.196.136.0/24 | ||||||
| NS | snail.dnspod.net | ||||||
| A | 2402:4e00:111:fff::c🇨🇳 TENCENT-NET-AP2402:4e00::/35 | ||||||
| A | 1.12.0.1🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM | ||||||
| A | 1.13.76.35🇨🇳 TENCENT-NET-AP1.13.64.0/18 | ||||||
| A | 36.155.149.35🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route) | ||||||
| A | 101.227.168.35🇨🇳 SHANGHAITELECOM101.227.168.0/23 SHIDC | ||||||
| A | 111.206.98.235🇨🇳 CHINA169-BJ111.206.98.0/24 | ||||||
| SOA | brandon.dnspod.netfreednsadmin@dnspod.com serial=1763366361 | ||||||
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=2035003443 | ||||||
Subdomains
newsletter.coserm.cn |
Same first word
Similar names
DNS History
4 records (2 active, 2 former)
○NSa.ezdnscenter.com2018-11-14 → 2018-11-14 · 3 obs
○ 2026-07-03 23:33:42
○ 2026-07-04 23:04:58
○NSb.ezdnscenter.com2018-11-14 → 2018-11-14 · 3 obs
○ 2026-07-03 23:33:42
○ 2026-07-04 23:04:58
●NSbrandon.dnspod.net2026-07-03 → 2026-07-04 · 3 obs
● 2026-07-03 23:33:42
● 2026-07-04 23:04:58
●NSsnail.dnspod.net2026-07-03 → 2026-07-04 · 3 obs
● 2026-07-03 23:33:42
● 2026-07-04 23:04:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | c.dns.cn, a.dns.cn, b.dns.cn, ns.cernet.net... | 11 records |
| coserm.cn | snail.dnspod.net, brandon.dnspod.net | - |
✅ Authoritative Response
Server:1.13.76.35
NS records: snail.dnspod.net, brandon.dnspod.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coserm.cn (unsigned zone)
⏱️ Timing
Total: 2573ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | brandon.dnspod.net, snail.dnspod.net |
| SOA | 1 | brandon.dnspod.net freednsadmin.dnspod.c |
📌 Glue Records Collected
Total: 11
In-bailiwick: 10 (a.dns.cn, b.dns.cn, c.dns.cn...)
Out-of-bailiwick: 1 (ns.cernet.net)
Analysis
Hierarchy
newsletter.coserm.cn is a subdomain of coserm.cn.
Name Servers
The NS records for coserm.cn delegate to brandon.dnspod.net and snail.dnspod.net.
coserm.cn shares its name server setup with other domains, including bcpg.cn, shcj.com, zadai.com and two others.
The name servers for coserm.cn overlap at least in part with those of other domains, including dangang.com and spyn.cn.
These name servers commonly appear in combination with the name servers f1g1ns1.dnspod.net.
Host names with 6 IP numbers:
brandon.dnspod.net maps to 1.12.0.4, 1.14.119.35, 111.13.13.35 and 3 additional IP addresses.
snail.dnspod.net maps to 1.12.0.1, 1.13.76.35, 36.155.149.35 and 3 additional IP addresses.