91sys.com - dns.ninja
91sys.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 154.213.36.209🇭🇰 POWERLINE-HK154.213.32.0/19 Digital Core Technology Co., Ltd | ||||||
| NS | a10.share-dns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | a.share-dns.com ⚠️ Not in zone NS records | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | b.share-dns.net ⚠️ Not in zone NS records | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | b10.share-dns.net ⚠️ Not in parent delegation | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | a.share-dns.commaster@share-dns.com serial=1772782992 | ||||||
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=1784808512 | ||||||
Subdomains
www.91sys.com |
Same first word
91sys.com |
Similar names
DNS History
12 records (5 active, 7 former)
●NSa.share-dns.com2026-03-21 → 2026-07-23 · 3 obs
● 2026-03-21 09:11:58
● 2026-07-23 12:33:42
●NSa10.share-dns.com2026-03-21 → 2026-07-23 · 3 obs
● 2026-03-21 09:11:58
● 2026-07-23 12:33:42
●NSb.share-dns.net2026-03-21 → 2026-07-23 · 3 obs
● 2026-03-21 09:11:58
● 2026-07-23 12:33:42
●NSb10.share-dns.net2026-03-21 → 2026-07-23 · 3 obs
● 2026-03-21 09:11:58
● 2026-07-23 12:33:42
○NSdns1.iidns.com2015-06-09 → 2016-04-17 · 4 obs
● 2016-04-17 07:30:50
○ 2017-06-23 19:36:46
○ 2026-07-23 12:33:42
○NSdns2.iidns.com2015-06-09 → 2016-04-17 · 4 obs
● 2016-04-17 07:30:50
○ 2017-06-23 19:36:46
○ 2026-07-23 12:33:42
○NSdns3.iidns.com2015-06-09 → 2016-04-17 · 4 obs
● 2016-04-17 07:30:50
○ 2017-06-23 19:36:46
○ 2026-07-23 12:33:42
○NSdns4.iidns.com2015-06-09 → 2016-04-17 · 4 obs
● 2016-04-17 07:30:50
○ 2017-06-23 19:36:46
○ 2026-07-23 12:33:42
○NSdns5.iidns.com2015-06-09 → 2016-04-17 · 4 obs
● 2016-04-17 07:30:50
○ 2017-06-23 19:36:46
○ 2026-07-23 12:33:42
○NSdns6.iidns.com2015-06-09 → 2016-04-17 · 4 obs
● 2016-04-17 07:30:50
○ 2017-06-23 19:36:46
○ 2026-07-23 12:33:42
●A154.213.36.2092026-03-21 → 2026-07-23 · 2 obs
● 2026-07-23 12:33:42
○A160.124.246.892026-03-21 → 2026-07-23 · 2 obs
○ 2026-07-23 12:33:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net... | - |
| 91sys.com | b10.share-dns.net, a10.share-dns.com | 1 record |
✅ Authoritative Response
Server:172.64.53.25
NS records: b10.share-dns.net, a10.share-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 91sys.com (unsigned zone)
⏱️ Timing
Total: 307ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.213.36.209 |
| 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 (a10.share-dns.com)
Analysis
Hierarchy
www.91sys.com is a subdomain of 91sys.com.
IP Addresses
91sys.com directs to one IP number, which is 154.213.36.209.
www.91sys.com is an example of another host name that shares IP numbers with 91sys.com.
Name Servers
The domain 91sys.com is delegated to these four name servers: a10.share-dns.com, a.share-dns.com, b10.share-dns.net and b.share-dns.net.
The name servers of 91sys.com overlap at least partially with those of other domains — among them dg-fn.com, sd-dafa.com, 78080.xyz and two more.
These name servers commonly appear in delegations together with a5.share-dns.com, b5.share-dns.net, a12.share-dns.com and 7 other.
Each of a10.share-dns.com, a.share-dns.com, b10.share-dns.net and b.share-dns.net has a single IP address — a10.share-dns.com and a.share-dns.com direct to 172.64.53.25, and b10.share-dns.net and b.share-dns.net direct to 172.64.52.239.
The host names a10.share-dns.com and a.share-dns.com both resolve to 172.64.53.25 IP addresses.
The host names b10.share-dns.net and b.share-dns.net both resolve to 172.64.52.239 IP addresses.