81os.com - robtex.com
81os.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 154.219.130.134🇭🇰 HDHK154.219.128.0/21 Proxy-registered route object | ||||||
| NS | a9.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 | b9.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=1773586249 | ||||||
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=1774585952 | ||||||
Same first word
81os.com |
Similar names
DNS History
19 records (5 active, 14 former)
●NSa.share-dns.com2026-02-20 → 2026-03-27 · 3 obs
● 2026-02-20 16:30:26
● 2026-03-27 04:34:22
○NSa10.share-dns.com2026-02-20 → 2026-02-20 · 4 obs
● 2026-02-20 16:30:26
○ 2026-03-27 04:34:20
○ 2026-03-27 04:34:22
●NSa9.share-dns.com2026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 04:34:20
● 2026-03-27 04:34:22
●NSb.share-dns.net2026-02-20 → 2026-03-27 · 3 obs
● 2026-02-20 16:30:26
● 2026-03-27 04:34:22
○NSb10.share-dns.net2026-02-20 → 2026-02-20 · 4 obs
● 2026-02-20 16:30:26
○ 2026-03-27 04:34:20
○ 2026-03-27 04:34:22
●NSb9.share-dns.net2026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 04:34:20
● 2026-03-27 04:34:22
○NSdns11.hichina.com2019-12-20 → 2019-12-20 · 4 obs
● 2019-12-20 13:15:56
○ 2026-02-20 16:30:26
○ 2026-03-27 04:34:22
○NSdns12.hichina.com2019-12-20 → 2019-12-20 · 4 obs
● 2019-12-20 13:15:56
○ 2026-02-20 16:30:26
○ 2026-03-27 04:34:22
○NSns1637.ztomy.com2017-03-14 → 2017-03-14 · 3 obs
○ 2019-12-20 13:15:56
○ 2026-03-27 04:34:22
○NSns2637.ztomy.com2017-03-14 → 2017-03-14 · 3 obs
○ 2019-12-20 13:15:56
○ 2026-03-27 04:34:22
○MXmxbiz1.qq.com2019-12-20 → 2019-12-20 · 3 obs
○ 2026-02-20 16:30:26
○ 2026-03-27 04:34:22
○MXmxbiz2.qq.com2019-12-20 → 2019-12-20 · 3 obs
○ 2026-02-20 16:30:26
○ 2026-03-27 04:34:22
○A104.37.244.2002016-02-12 → 2016-02-12 · 3 obs
○ 2016-06-26 23:21:28
○ 2026-03-27 04:34:22
●A154.219.130.1342026-03-27 → 2026-03-27 · 3 obs
● 2026-03-27 04:34:20
● 2026-03-27 04:34:22
○A204.11.56.372017-03-14 → 2017-03-14 · 4 obs
● 2017-03-14 11:59:42
○ 2019-12-20 13:15:56
○ 2026-03-27 04:34:22
○A23.234.8.1772026-02-20 → 2026-02-20 · 4 obs
● 2026-02-20 16:30:26
○ 2026-03-27 04:34:20
○ 2026-03-27 04:34:22
○A47.107.79.1462019-12-20 → 2019-12-20 · 4 obs
● 2019-12-20 13:15:56
○ 2026-02-20 16:30:26
○ 2026-03-27 04:34:22
○A47.88.33.672016-06-26 → 2016-06-26 · 4 obs
● 2016-06-26 23:21:28
○ 2017-03-14 11:59:42
○ 2026-03-27 04:34:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| 81os.com | b9.share-dns.net, a9.share-dns.com | 1 record |
✅ Authoritative Response
Server:172.64.52.239
NS records: b9.share-dns.net, a9.share-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 81os.com (unsigned zone)
⏱️ Timing
Total: 225ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.219.130.134 |
| 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 (a9.share-dns.com)
Analysis
IP Addresses
81os.com resolves to a single IP address: 154.219.130.134.
Other host names such as bjftcy.com, gobestint.com and 9cj.net share IP numbers with 81os.com.
Name Servers
81os.com is delegated to four name servers: a9.share-dns.com, a.share-dns.com, b9.share-dns.net and b.share-dns.net.
81os.com at least partially shares name servers with other domains, including zxfdl.com, syhengbo.com, szhdszdm.com, com-phrnu.cc and ke-kaiyun.com.
These name servers are typically used together with the name servers a7.share-dns.com, b7.share-dns.net, a10.share-dns.com, b10.share-dns.net, a3.share-dns.com, b3.share-dns.net, a1.share-dns.com, b1.share-dns.net, a11.share-dns.com and b11.share-dns.net.
Host names with a single IP number:
a9.share-dns.com resolves to 172.64.53.25.
a.share-dns.com resolves to 172.64.53.25.
b9.share-dns.net resolves to 172.64.52.239.
b.share-dns.net resolves to 172.64.52.239.
Host names pointing to 172.64.53.25: a9.share-dns.com, a.share-dns.com.
Host names pointing to 172.64.52.239: b9.share-dns.net, b.share-dns.net.