21mu.net - robtex.com
21mu.net
| DNSSEC | ⚠️ Not signed | ||||||
| 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=1762085887 | ||||||
net
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1774458462 | ||||||
Same first word
21mu.net |
Similar names
21um.com |
12mu.cn |
um12.de |
um21.net |
12mu.com |
1m2u.com |
um21.com |
u1m2.com |
mu21.com |
mu21.de |
um12.com |
mu12.com |
m12u.net |
12um.com |
um12.com.br |
DNS History
7 records (4 active, 3 former)
●NSns1.judns.com2026-02-16 → 2026-03-25 · 3 obs
○ 2015-10-20 00:00:58
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
●NSns1.julydns.com2026-02-16 → 2026-03-25 · 3 obs
○ 2015-10-20 00:00:58
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
○NSns1.parkingspa.com2008-11-28 → 2008-11-28 · 3 obs
● 2008-11-28 01:01:58
○ 2015-10-20 00:00:58
○ 2026-03-25 17:30:44
○ 2015-10-20 00:00:58
○ 2026-03-25 17:30:44
●NSns2.judns.com2026-02-16 → 2026-03-25 · 3 obs
○ 2015-10-20 00:00:58
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
●NSns2.julydns.com2026-02-16 → 2026-03-25 · 3 obs
○ 2015-10-20 00:00:58
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
● 2026-02-16 09:37:14
● 2026-03-25 17:30:44
○NSns2.parkingspa.com2008-11-28 → 2008-11-28 · 3 obs
● 2008-11-28 01:01:58
○ 2015-10-20 00:00:58
○ 2026-03-25 17:30:44
○ 2015-10-20 00:00:58
○ 2026-03-25 17:30:44
○A66.246.235.422008-11-28 → 2008-11-28 · 3 obs
● 2008-11-28 01:01:58
○ 2015-10-20 00:00:58
○ 2026-03-25 17:30:44
○ 2015-10-20 00:00:58
○ 2026-03-25 17:30:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | d.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net... | - |
| 21mu.net | 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 21mu.net (unsigned zone)
⏱️ Timing
Total: 781ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
Name Servers
21mu.net is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
21mu.net shares some name servers with other domains, for example vlave.com, balawyer.com, goerm.com, fouzai.cn and weireliu.com.
These name servers are commonly used with the name servers jm1.dns.com.
Host names with a single IP:
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
Names pointing to 47.97.51.45: ns1.judns.com, ns1.julydns.com