sentryo.io - robtex.com

sentryo.io

DNSSEC⚠️ Not signed
A72.163.4.154🇺🇸 ASNTTCISCO72.163.4.0/24 170 West Tasman Drive San Jose CA 95134 United States
PTRredirect.cisco.com
NSns1.cisco.com ⭐
A2001:420:1101:6::a🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States
PTRns1.cisco.com
A72.163.5.201🇺🇸 ASNTTCISCO72.163.0.0/18 170 West Tasman Drive San Jose CA 95134 United States
PTRns1.cisco.com
NSns2.cisco.com
A2001:420:2041:5000::a🇺🇸 ASNTTCISCO2001:420:2000::/35 170 West Tasman Drive San Jose CA 95134 United States
PTRns2.cisco.com
A64.102.255.44🇺🇸 ASNTTCISCO64.102.0.0/16 170 West Tasman Drive San Jose CA 95134 United States
PTRns2.cisco.com
NSns3.cisco.com
A2001:420:1201:7::a🇺🇸 ASNTTCISCO2001:420:1200::/41 170 West Tasman Drive San Jose CA 95134 United States
PTRns3.cisco.com
A173.37.146.41🇺🇸 ASNTTCISCO173.37.128.0/19 170 West Tasman Drive San Jose CA 95134 United States
PTRns3.cisco.com
MXalln-mx-01.cisco.com ⭐
A2001:420:1201:6::ad25:93e6🇺🇸 ASNTTCISCO2001:420:1200::/41 170 West Tasman Drive San Jose CA 95134 United States
PTRalln-mx-01.cisco.com
A173.37.147.230🇺🇸 ASNTTCISCO173.37.128.0/19 170 West Tasman Drive San Jose CA 95134 United States
PTRalln-mx-01.cisco.com
MXrcdn-mx-01.cisco.com(20)
A2001:420:1101:7::48a3:166🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States
PTRrcdn-mx-01.cisco.com
A72.163.7.166🇺🇸 ASNTTCISCO72.163.7.0/24 170 West Tasman Drive San Jose CA 95134 United States
PTRrcdn-mx-01.cisco.com
MXaer-mx-01.cisco.com(30)
A2001:420:4621::ad26:d496🇳🇱 ASNTTCISCO2001:420:4000::/36 170 West Tasman Drive San Jose CA 95134 United States
PTRaer-mx-01.cisco.com
A173.38.212.150🇳🇱 ASNTTCISCO173.38.128.0/17 170 West Tasman Drive San Jose CA 95134 United States
PTRaer-mx-01.cisco.com
TXTidentrust_validate=pzl8g1oillkC0bOmdkB3KetchDMJFVblrCYD7nhHruNg
SOAns1.cisco.compostmaster@cisco.com serial=44

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1778335103

Same first word

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sentryo.app
sentryo.io
sentryo.com
sentryo.de
sentryo.org
sentryo.net
sentryo.fr
sentryo.com.tw
sentryo.hk

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sorteny.com
nestory.com
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nerosty.cz
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DNS History

7 records (7 active, 0 former)

NSns1.cisco.comns2.cisco.comns3.cisco.comMXaer-mx-01.cisco.comalln-mx-01.cisco.comrcdn-mx-01.cisco.comA72.163.4.154
●NSns1.cisco.com2026-05-03 → 2026-05-09 · 2 obs
● 2026-05-03 12:30:16
● 2026-05-09 14:23:58
●NSns2.cisco.com2026-05-03 → 2026-05-09 · 2 obs
● 2026-05-03 12:30:16
● 2026-05-09 14:23:58
●NSns3.cisco.com2026-05-03 → 2026-05-09 · 2 obs
● 2026-05-03 12:30:16
● 2026-05-09 14:23:58
●MXaer-mx-01.cisco.com2026-05-03 → 2026-05-09 · 2 obs
● 2026-05-03 12:30:16
● 2026-05-09 14:23:58
●MXalln-mx-01.cisco.com2026-05-03 → 2026-05-09 · 2 obs
● 2026-05-03 12:30:16
● 2026-05-09 14:23:58
●MXrcdn-mx-01.cisco.com2026-05-03 → 2026-05-09 · 2 obs
● 2026-05-03 12:30:16
● 2026-05-09 14:23:58
●A72.163.4.1542026-05-03 → 2026-05-09 · 2 obs
● 2026-05-03 12:30:16
● 2026-05-09 14:23:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioa0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io-
sentryo.ions1.cisco.com, ns2.cisco.com, ns3.cisco.com-

✅ Authoritative Response

Server:72.163.5.201

NS records: ns1.cisco.com, ns2.cisco.com, ns3.cisco.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sentryo.io (unsigned zone)

⏱️ Timing

Total: 577ms | Queries: -

📄 Records

TypeCountSample Data
A172.163.4.154
NS3ns2.cisco.com, ns3.cisco.com...
MX3rcdn-mx-01.cisco.com (pri: 20), alln-mx-01.cisco.com (pri: 10)...
TXT1identrust_validate=pzl8g1oillkC0bOmdkB3K
SOA1ns1.cisco.com postmaster.cisco.com

Analysis

IP Addresses

sentryo.io points to a single IP number: 72.163.4.154.

Other host names, for instance cisco.net, ciscobuy.info, ciscosystems.bo.it, cisco.ap.it and cisco.co share IP numbers with sentryo.io.

Name Servers

The domain sentryo.io is delegated to three name servers: ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.

sentryo.io shares name servers with other domains at least partially, for instance ciscojabbervideo.ch, ciscoprisma.info, cisconvi.org, ensoft.co.uk and xn--m8t158c.xn--6frz82g.

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.io is handled by three mail servers: aer-mx-01.cisco.com, alln-mx-01.cisco.com and rcdn-mx-01.cisco.com.

sentryo.io shares some mail servers with other domains, including navini.com, mailingcompanion.com, splunk.com, cloupia.com and reactivity.com.

these mail servers are commonly used with ams-mx-01.cisco.com, rtp-mx-01.cisco.com, mail1.dynamicsoft.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