sentryo.hk - robtex.com
sentryo.hk
hk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns3.hkirc.net.hk ⭐ | ||||||
| NS | c.hkirc.net.hk | ||||||
| NS | d.hkirc.net.hk | ||||||
| NS | m.hkirc.net.hk | ||||||
| NS | t.hkirc.net.hk | ||||||
| NS | u.hkirc.net.hk | ||||||
| NS | v.hkirc.net.hk | ||||||
| NS | x.hkirc.net.hk | ||||||
| NS | y.hkirc.net.hk | ||||||
| NS | z.hkirc.net.hk | ||||||
| SOA | ns3.hkirc.net.hkhostmaster@hkirc.net.hk serial=2074915605 | ||||||
Same first word
Similar names
DNS History
11 records (11 active, 0 former)
●MXalt1.aspmx.l.google.com2026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
●MXalt2.aspmx.l.google.com2026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
●MXaspmx.l.google.com2026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
●MXaspmx2.googlemail.com2026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
●MXaspmx3.googlemail.com2026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
●MXaspmx4.googlemail.com2026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
●MXaspmx5.googlemail.com2026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
●A72.163.4.1542026-03-31 → 2026-04-02 · 2 obs
● 2026-04-02 12:03:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| hk | c.hkirc.net.hk, d.hkirc.net.hk, m.hkirc.net.hk, t.hkirc.net.hk... | 18 records |
| sentryo.hk | ns1.cisco.com, ns3.cisco.com, ns2.cisco.com | - |
✅ Authoritative Response
Server:173.37.146.41
NS records: ns1.cisco.com, ns3.cisco.com, ns2.cisco.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sentryo.hk (unsigned zone)
⏱️ Timing
Total: 1205ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 72.163.4.154 |
| NS | 3 | ns3.cisco.com, ns2.cisco.com... |
| MX | 7 | aspmx2.googlemail.com (pri: 5), alt1.aspmx.l.google.com (pri: 3)... |
| SOA | 1 | ns1.cisco.com postmaster.cisco.com |
📌 Glue Records Collected
Total: 18
In-bailiwick: 18 (c.hkirc.net.hk, c.hkirc.net.hk, d.hkirc.net.hk...)
Analysis
IP Addresses
sentryo.hk points to an IP address: 72.163.4.154.
other host names include collaboration.cisco, ciscopowered.info, cisco.dk, piston.cc and cisco.biz.vn; they share IP numbers with sentryo.hk.
Name Servers
sentryo.hk is delegated to three name servers ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.
sentryo.hk at least partially shares name servers with other domains, for instance 990mxp.com, cisco-nj.com, ciscoasr.org, ciscoexplorer.org and dc-bootcamp.com.
Host names with two IP numbers:
ns1.cisco.com points to 2001:420:1101:6::a and 72.163.5.201; ns2.cisco.com points to 2001:420:2041:5000::a and 64.102.255.44; ns3.cisco.com points to 2001:420:1201:7::a and 173.37.146.41.
Mail Servers
sentryo.hk is handled by seven mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com, aspmx5.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
sentryo.hk shares at least partially some mail servers with other domains, for instance pdfpresort.com, 50floorexperts.com, itcrowd.com, organizedhardcore.org and ns500671.ns500671.ns500671.ns500754.ns500754.ns500704.ns500705.ns500704.ns500688.ns500649.tenderladiesbz.com.
these mail servers are commonly used alongside alt4.aspmx.l.google.com and alt3.aspmx.l.google.com.
Host names with two IP numbers:
aspmx2.googlemail.com points to 2a00:1450:4025:402::1b and 142.250.102.26.
aspmx3.googlemail.com points to 2a00:1450:400b:c02::1b and 172.253.116.26.
aspmx4.googlemail.com points to 2607:f8b0:4023:3003::1b and 172.253.145.26.
aspmx5.googlemail.com points to 2a00:1450:400c:c00::1b and 173.194.76.27.
aspmx.l.google.com points to 2607:f8b0:4023:c0d::1a and 142.250.101.26.
alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1b and 108.177.123.26.
alt2.aspmx.l.google.com points to 2607:f8b0:4023:1015::1b and 172.253.135.27.