u281.cn - robtex.com
u281.cn
| CNAME | tc217-site01.mac-cdn.net | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
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=2034590645 | ||||||
Same first word
Similar names
81u2.cn |
281u.com |
u821.com |
128u.com |
u218.tv |
12u8.com |
u821.cn |
128u.cc |
u812.info |
u218.com |
2u81.com |
182u.com |
u218.de |
821u.com |
21u8.casino |
218u.com |
2u18.com |
812u.com |
u182.com |
DNS History
8 records (5 active, 3 former)
○NSns1.dnspai.com2020-02-03 → 2020-02-03 · 3 obs
● 2020-02-03 14:01:38
○ 2026-03-26 21:04:18
○ 2026-03-26 21:04:20
○ 2026-03-26 21:04:18
○ 2026-03-26 21:04:20
●NSns1.judns.com2026-03-26 → 2026-03-26 · 3 obs
○ 2020-02-03 14:01:38
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
●NSns1.julydns.com2026-03-26 → 2026-03-26 · 3 obs
○ 2020-02-03 14:01:38
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
○NSns2.dnspai.com2020-02-03 → 2020-02-03 · 3 obs
● 2020-02-03 14:01:38
○ 2026-03-26 21:04:18
○ 2026-03-26 21:04:20
○ 2026-03-26 21:04:18
○ 2026-03-26 21:04:20
●NSns2.judns.com2026-03-26 → 2026-03-26 · 3 obs
○ 2020-02-03 14:01:38
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
●NSns2.julydns.com2026-03-26 → 2026-03-26 · 3 obs
○ 2020-02-03 14:01:38
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
○A23.104.95.1082020-02-03 → 2020-02-03 · 3 obs
● 2020-02-03 14:01:38
○ 2026-03-26 21:04:18
○ 2026-03-26 21:04:20
○ 2026-03-26 21:04:18
○ 2026-03-26 21:04:20
●CNAMEtc217-site01.mac-cdn.net2026-03-26 → 2026-03-26 · 2 obs
● 2026-03-26 21:04:18
● 2026-03-26 21:04:20
● 2026-03-26 21:04:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| u281.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:47.97.51.45
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for u281.cn (unsigned zone)
⏱️ Timing
Total: 1774ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| CNAME | 1 | tc217-site01.mac-cdn.net |
| SOA | 1 | ns1.julydns.com master.jmdns.com |