521yy.com - robtex.com
521yy.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 208.98.40.228🇺🇸 SHARKTECH-1208.98.40.0/24 | ||||||
| NS | www.521yy.com ⭐ | ||||||
| A | 208.98.43.99🇺🇸 SHARKTECH-1208.98.43.0/24 | ||||||
| PTR | node-208-98-43-99.reverse.x4b.me | ||||||
| NS | ns1.4.cn ⚠️ Not in zone NS records | ||||||
| A | 107.167.27.66🇺🇸 SHARKTECH-1107.167.27.0/24 CMI (Customer Route) | ||||||
| NS | ns2.4.cn ⚠️ Not in zone NS records | ||||||
| A | 208.98.43.66🇺🇸 SHARKTECH-1208.98.43.0/24 | ||||||
| PTR | jensenstilbud.com | ||||||
| SOA | www.521yy.com521yy@com 2008-08-03 #0 | ||||||
com
| 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=1786700934 | ||||||
Subdomains
www.521yy.com |
Same first word
Similar names
DNS History
14 records (4 active, 10 former)
○NSdns10.hichina.com2015-09-04 → 2017-06-04 · 4 obs
● 2017-06-04 13:20:30
○ 2026-07-07 13:14:42
○ 2026-08-14 09:55:18
○NSdns9.hichina.com2015-09-04 → 2017-06-11 · 4 obs
● 2017-06-11 01:25:06
○ 2026-07-07 13:14:42
○ 2026-08-14 09:55:18
●NSns1.4.cn2026-07-07 → 2026-08-14 · 3 obs
● 2026-07-07 13:14:42
● 2026-08-14 09:55:18
●NSns2.4.cn2026-07-07 → 2026-08-14 · 3 obs
● 2026-07-07 13:14:42
● 2026-08-14 09:55:18
●NSwww.521yy.com2026-07-07 → 2026-08-14 · 5 obs
● 2026-07-07 13:14:42
○ 2026-08-01 04:01:50
● 2026-08-01 22:30:26
● 2026-08-14 09:55:18
○A110.76.46.492015-09-04 → 2016-09-23 · 4 obs
● 2016-09-23 13:16:24
○ 2016-10-04 14:39:52
○ 2026-08-14 09:55:18
○A119.10.28.362016-10-04 → 2017-06-11 · 5 obs
● 2016-10-04 14:39:52
● 2017-06-11 01:25:06
○ 2026-07-07 13:14:42
○ 2026-08-14 09:55:18
●A208.98.40.2282026-08-14 → 2026-08-14 · 2 obs
● 2026-08-14 09:55:18
○A208.98.40.2302026-07-28 → 2026-07-28 · 4 obs
● 2026-07-28 13:28:14
○ 2026-08-01 04:01:50
○ 2026-08-14 09:55:18
○A208.98.40.332026-08-01 → 2026-08-01 · 4 obs
● 2026-08-01 22:30:26
○ 2026-08-06 09:17:10
○ 2026-08-14 09:55:18
○A208.98.43.1002026-07-07 → 2026-07-07 · 4 obs
● 2026-07-07 14:20:32
○ 2026-07-18 14:21:58
○ 2026-08-14 09:55:18
○A208.98.43.342026-08-06 → 2026-08-06 · 4 obs
● 2026-08-06 09:17:10
○ 2026-08-08 23:27:50
○ 2026-08-14 09:55:18
○A208.98.43.372026-07-18 → 2026-08-08 · 5 obs
● 2026-07-18 14:21:58
○ 2026-07-21 04:41:12
● 2026-08-08 23:27:50
○ 2026-08-14 09:55:18
○A208.98.43.992026-07-07 → 2026-07-07 · 4 obs
● 2026-07-07 13:14:42
○ 2026-07-07 14:20:32
○ 2026-08-14 09:55:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, f.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net... | - |
| 521yy.com | ns1.4.cn, ns2.4.cn | - |
✅ Authoritative Response
Server:208.98.43.66
NS records: ns1.4.cn, ns2.4.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 521yy.com (unsigned zone)
⏱️ Timing
Total: 946ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 208.98.43.31 |
| SOA | 1 | www.521yy.com 521yy.com |
Analysis
Hierarchy
www.521yy.com is delegated beneath 521yy.com.
IP Addresses
521yy.com directs to one IP number, which is 208.98.40.228.
Among the host names that share IP numbers with 521yy.com are www.bjzsw.com, mail.lngkw.com, lkofgdll.cz.cc and two others.
Name Servers
521yy.com carries NS records delegating to ns1.4.cn, ns2.4.cn and www.521yy.com.
There is at least partial name server overlap between 521yy.com and other domains — leiqu.com, mdsmh.com, 72731.com and two more among them.
These name servers tend to appear in combination with the name servers ns3.goldenname.com, ns4.goldenname.com, www.mdsmh.com and www.72731.com.
ns1.4.cn points to 107.167.27.66; ns2.4.cn points to 208.98.43.66; www.521yy.com points to 208.98.43.99 — each hostname maps to exactly one IP address.