rfcalmm.cn - robtex.com
rfcalmm.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 173.249.187.111🇺🇸 BETTER-HK173.249.187.0/24 client's prefix | ||||||
| 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 | ns1.onclouddns.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 | ||||||
| NS | ns2.onclouddns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1778766475 | ||||||
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=2035116311 | ||||||
Same first word
rfcalmm.cn |
DNS History
5 records (5 active, 0 former)
●NSns1.julydns.com2026-07-29 → 2026-07-31 · 2 obs
● 2026-07-31 13:52:14
●NSns1.onclouddns.com2026-07-29 → 2026-07-31 · 2 obs
● 2026-07-31 13:52:14
●NSns2.julydns.com2026-07-29 → 2026-07-31 · 2 obs
● 2026-07-31 13:52:14
●NSns2.onclouddns.com2026-07-29 → 2026-07-31 · 2 obs
● 2026-07-31 13:52:14
●A173.249.187.1112026-07-29 → 2026-07-31 · 2 obs
● 2026-07-31 13:52:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| rfcalmm.cn | ns1.onclouddns.com, ns2.onclouddns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.onclouddns.com, ns2.onclouddns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rfcalmm.cn (unsigned zone)
⏱️ Timing
Total: 1975ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 173.249.187.111 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
rfcalmm.cn points to a single IP number: 173.249.187.111.
Additional host names — 025658.cn, szjmf.cn, qbedzgv.com and two others — share IP numbers with rfcalmm.cn.
Name Servers
rfcalmm.cn has four authoritative name servers: ns1.julydns.com, ns2.julydns.com, ns1.onclouddns.com and ns2.onclouddns.com.
rfcalmm.cn has at least partial name server overlap with other domains, such as lsdm.cn, dabailuobo.com, jinhuaban.cn and two others.
It is common to see these name servers used together with name servers ns1.judns.com and ns2.judns.com.
ns1.julydns.com and ns2.julydns.com each resolve to 162.159.48.223, while ns1.onclouddns.com and ns2.onclouddns.com each resolve to 162.159.27.251.
Both ns1.julydns.com and ns2.julydns.com resolve to 162.159.48.223 IP addresses each.
Both ns1.onclouddns.com and ns2.onclouddns.com resolve to 162.159.27.251 IP addresses each.