521221.com - robtex.com
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521221.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 154.223.230.135🇭🇰 USZNI-AS-AP | ||||||
| NS | a4.share-dns.com ⭐ ⚠️ | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare | ||||||
| PTR | ip-172-64-53-25.defastlink.net | ||||||
| NS | a.share-dns.com⚠️ | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare | ||||||
| PTR | ip-172-64-53-25.defastlink.net | ||||||
| NS | b.share-dns.net⚠️ | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare | ||||||
| PTR | ip-172-64-52-239.defastlink.net | ||||||
| NS | b4.share-dns.net⚠️ | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare | ||||||
| PTR | ip-172-64-52-239.defastlink.net | ||||||
| SOA | a.share-dns.commaster@share-dns.com serial=1756277757 | ||||||
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=1770918430 | ||||||
Same first word
521221.com |
Similar names
DNS History
8 records (5 active, 3 former)
●NSa.share-dns.com2026-02-15 → 2026-02-15 · 3 obs
● 2026-02-15 04:42:24
● 2026-02-15 04:42:26
●NSa4.share-dns.com2026-02-15 → 2026-02-15 · 3 obs
● 2026-02-15 04:42:24
● 2026-02-15 04:42:26
●NSb.share-dns.net2026-02-15 → 2026-02-15 · 3 obs
● 2026-02-15 04:42:24
● 2026-02-15 04:42:26
●NSb4.share-dns.net2026-02-15 → 2026-02-15 · 3 obs
● 2026-02-15 04:42:24
● 2026-02-15 04:42:26
○NSdns27.hichina.com2018-09-05 → 2018-09-05 · 3 obs
○ 2026-02-15 04:42:24
○ 2026-02-15 04:42:26
○NSdns28.hichina.com2018-09-05 → 2018-09-05 · 3 obs
○ 2026-02-15 04:42:24
○ 2026-02-15 04:42:26
●A154.223.230.1352026-02-15 → 2026-02-15 · 3 obs
● 2026-02-15 04:42:24
● 2026-02-15 04:42:26
○A39.104.67.1042018-09-05 → 2018-09-05 · 3 obs
○ 2026-02-15 04:42:24
○ 2026-02-15 04:42:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 521221.com | b4.share-dns.net, a4.share-dns.com | 1 record |
✅ Authoritative Response
Server: 172.64.52.239
NS records: b4.share-dns.net, a4.share-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 521221.com (unsigned zone)
⏱️ Timing
Total: 502ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.223.230.135 |
| NS | 2 | a.share-dns.com, b.share-dns.net |
| SOA | 1 | a.share-dns.com master.share-dns.com |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (a4.share-dns.com)
AI analysis
521221.com points to a single IP number: 154.223.230.135.
521221.com is delegated to four name servers: a4.share-dns.com, a.share-dns.com, b4.share-dns.net and b.share-dns.net.
521221.com at least partially shares name servers with other domains, for instance thinkwinter.com, hfhds.com, 130126.com, hcjl.net and silenoquartz.com.
These name servers are often used together with the name servers a3.share-dns.com, b3.share-dns.net, a1.share-dns.com, b1.share-dns.net, a7.share-dns.com, b7.share-dns.net, a10.share-dns.com, b10.share-dns.net, a5.share-dns.com and b5.share-dns.net.
Host names with one IP:
a4.share-dns.com points to 172.64.53.25.
a.share-dns.com points to 172.64.53.25.
b4.share-dns.net points to 172.64.52.239.
b.share-dns.net points to 172.64.52.239.
Hosts pointing to 172.64.53.25: a4.share-dns.com, a.share-dns.com.
Hosts pointing to 172.64.52.239: b4.share-dns.net, b.share-dns.net.