sentryo.com.tw - robtex.com
sentryo.com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| A | 72.163.4.154🇺🇸 ASNTTCISCO72.163.4.0/24 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | redirect.cisco.com | ||||||
| NS | ns1.cisco.com ⭐ | ||||||
| A | 2001:420:1101:6::a🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | ns1.cisco.com | ||||||
| A | 72.163.5.201🇺🇸 ASNTTCISCO72.163.0.0/18 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | ns1.cisco.com | ||||||
| NS | ns2.cisco.com | ||||||
| A | 2001:420:2041:5000::a🇺🇸 ASNTTCISCO2001:420:2000::/35 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | ns2.cisco.com | ||||||
| A | 64.102.255.44🇺🇸 ASNTTCISCO64.102.0.0/16 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | ns2.cisco.com | ||||||
| NS | ns3.cisco.com | ||||||
| A | 2001:420:1201:7::a🇺🇸 ASNTTCISCO2001:420:1200::/41 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | ns3.cisco.com | ||||||
| A | 173.37.146.41🇺🇸 ASNTTCISCO173.37.128.0/19 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | ns3.cisco.com | ||||||
| MX | alln-mx-01.cisco.com ⭐ | ||||||
| A | 2001:420:1201:6::ad25:93e6🇺🇸 ASNTTCISCO2001:420:1200::/41 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | alln-mx-01.cisco.com | ||||||
| A | 173.37.147.230🇺🇸 ASNTTCISCO173.37.128.0/19 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | alln-mx-01.cisco.com | ||||||
| MX | rcdn-mx-01.cisco.com(20) | ||||||
| A | 2001:420:1101:7::48a3:166🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | rcdn-mx-01.cisco.com | ||||||
| A | 72.163.7.166🇺🇸 ASNTTCISCO72.163.7.0/24 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | rcdn-mx-01.cisco.com | ||||||
| MX | aer-mx-01.cisco.com(30) | ||||||
| A | 2001:420:4621::ad26:d496🇳🇱 ASNTTCISCO2001:420:4000::/36 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | aer-mx-01.cisco.com | ||||||
| A | 173.38.212.150🇳🇱 ASNTTCISCO173.38.128.0/17 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | aer-mx-01.cisco.com | ||||||
| SOA | ns1.cisco.compostmaster@cisco.com serial=39 | ||||||
com.tw
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.twnic.net.tw ⭐ ⚠️ Not in parent delegation | ||||||
| NS | anytld.apnic.net ⚠️ Not in parent delegation | ||||||
| NS | b.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | c.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | d.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | e.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | f.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | g.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| NS | h.dns.tw ⚠️ Not in parent delegation | ||||||
| NS | h.twnic.net.tw ⚠️ Not in parent delegation | ||||||
| SOA | a.twnic.net.twsnw@twnic.net.tw serial=2006348923 | ||||||
Same first word
sentryo.io |
sentryo.com |
sentryo.de |
sentryo.org |
sentryo.net |
sentryo.fr |
sentryo.com.tw |
sentryo.hk |
sentryo.eu |
sentryo.app |
Similar names
DNS History
7 records (7 active, 0 former)
●MXaer-mx-01.cisco.com2026-05-03 → 2026-05-10 · 2 obs
● 2026-05-10 09:08:26
●MXalln-mx-01.cisco.com2026-05-03 → 2026-05-10 · 2 obs
● 2026-05-10 09:08:26
●MXrcdn-mx-01.cisco.com2026-05-03 → 2026-05-10 · 2 obs
● 2026-05-10 09:08:26
●A72.163.4.1542026-05-03 → 2026-05-10 · 2 obs
● 2026-05-10 09:08:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tw | e.dns.tw, a.dns.tw, b.dns.tw, c.dns.tw... | - |
| sentryo.com.tw | ns1.cisco.com, ns3.cisco.com, ns2.cisco.com | - |
✅ Authoritative Response
Server:64.102.255.44
NS records: ns1.cisco.com, ns3.cisco.com, ns2.cisco.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sentryo.com.tw (unsigned zone)
⏱️ Timing
Total: 1359ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 72.163.4.154 |
| NS | 3 | ns1.cisco.com, ns2.cisco.com... |
| MX | 3 | alln-mx-01.cisco.com (pri: 10), rcdn-mx-01.cisco.com (pri: 20)... |
| SOA | 1 | ns1.cisco.com postmaster.cisco.com |
Analysis
IP Addresses
sentryo.com.tw points to a single IP: 72.163.4.154.
Other host names, for instance cisco.org.ag, pawsdeveloper.com, ciscosystems.firm.ro, cisco.co.tt and www.cisc.info share IP numbers with sentryo.com.tw.
Name Servers
sentryo.com.tw is delegated to three name servers: ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.
sentryo.com.tw at least partially shares its name servers with other domains, for instance thurisa.com, cityecomap.com, ciscorouters.info, femtoapps.org and cognitive-analyst.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.com.tw is handled by three mail servers: aer-mx-01.cisco.com, alln-mx-01.cisco.com and rcdn-mx-01.cisco.com.
sentryo.com.tw shares some mail servers with other domains, including acacia-inc.com, signalfx.com, protego.org, maintenancenet.com and luxtera.com.
these mail servers are commonly used with the mail servers mail1.dynamicsoft.com, rtp-mx-01.cisco.com, smtp2.easydns.com, smtp.easydns.com, smtp.protegonetworks.com and mail.topspin.com.
Host names with two IP numbers:
aer-mx-01.cisco.com points to: 2001:420:4621::ad26:d496 and 173.38.212.150.
alln-mx-01.cisco.com points to: 2001:420:1201:6::ad25:93e6 and 173.37.147.230.
rcdn-mx-01.cisco.com points to: 2001:420:1101:7::48a3:166 and 72.163.7.166.