coreoptics.com - dns.ninja
coreoptics.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:420:1101:1::b🇺🇸 ASNTTCISCO2001:420:1100::/41 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| PTR | redirect.cisco.com | ||||||
| A | 72.163.4.154🇺🇸 ASNTTCISCO72.163.4.0/24 170 West Tasman Drive San Jose CA 95134 United States | ||||||
| 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 | rcdn-mx-01.cisco.com ⭐ | ||||||
| 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(15) | ||||||
| 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 | ||||||
| MX | alln-mx-01.cisco.com(15) | ||||||
| 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 | ||||||
| TXT | v=spf1 ip4:62.146.143.20 mx ~all | ||||||
| SOA | ns1.cisco.compostmaster@cisco.com serial=12 | ||||||
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=1786431694 | ||||||
Subdomains
Same first word
coreoptics.net |
coreoptics.de |
coreoptics.com |
Similar names
optisoccer.com |
cpiscooter.com |
opticscore.de |
coretopics.us |
ciceropost.com |
ecotropics.com |
opticscore.com |
octoprices.com |
topicscore.com |
copistcore.click |
piccostore.com |
ecotropics.org |
DNS History
10 records (8 active, 2 former)
○NSedns-aln1-1-l2016-10-13 → 2016-10-13 · 4 obs
● 2016-10-13 10:24:40
○ 2016-10-17 06:16:38
○ 2026-08-11 07:29:52
○NSedns-aln1-1-l.cisco.com2015-08-09 → 2016-10-17 · 6 obs
● 2016-04-10 11:09:30
○ 2016-10-13 10:24:40
● 2016-10-17 06:16:38
○ 2020-01-10 04:48:40
○ 2026-08-11 07:29:52
●MXaer-mx-01.cisco.com2015-08-09 → 2026-08-11 · 2 obs
● 2026-08-11 07:29:52
●MXalln-mx-01.cisco.com2015-08-09 → 2026-08-11 · 2 obs
● 2026-08-11 07:29:52
●MXrcdn-mx-01.cisco.com2015-08-09 → 2026-08-11 · 2 obs
● 2026-08-11 07:29:52
●A2001:420:1101:1::b2015-08-09 → 2026-08-11 · 2 obs
● 2026-08-11 07:29:52
●A72.163.4.1542015-08-09 → 2026-08-11 · 2 obs
● 2026-08-11 07:29:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net, b.gtld-servers.net... | - |
| coreoptics.com | ns1.cisco.com, ns2.cisco.com, ns3.cisco.com | 6 records |
✅ 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 coreoptics.com (unsigned zone)
⏱️ Timing
Total: 302ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 72.163.4.154 |
| AAAA | 1 | 2001:420:1101:1::b |
| NS | 3 | ns1.cisco.com, ns3.cisco.com... |
| MX | 3 | alln-mx-01.cisco.com (pri: 15), aer-mx-01.cisco.com (pri: 15)... |
| TXT | 1 | v=spf1 ip4:62.146.143.20 mx ~all |
| SOA | 1 | ns1.cisco.com postmaster.cisco.com |
📌 Glue Records Collected
Total: 6
Out-of-bailiwick: 6 (ns1.cisco.com, ns1.cisco.com, ns2.cisco.com...)
Analysis
Hierarchy
The parent domain of mail.coreoptics.com and www.coreoptics.com is coreoptics.com.
IP Addresses
coreoptics.com points to the IP addresses 72.163.4.154 and 2001:420:1101:1::b
Among the host names that share IP numbers with coreoptics.com are ciscosystems.com.ua, ciscoonline.info, cisco.com.sn and two others.
Name Servers
coreoptics.com has three name servers — ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.
There is at least partial name server overlap between coreoptics.com and other domains — 0.9.251.63.in-addr.arpa, ciscodvn.tw, mysdn.com and two more among them.
Each of ns1.cisco.com, ns2.cisco.com and ns3.cisco.com points to two IP numbers. ns1.cisco.com points to 72.163.5.201 and 2001:420:1101:6::a. ns2.cisco.com points to 64.102.255.44 and 2001:420:2041:5000::a. ns3.cisco.com points to 173.37.146.41 and 2001:420:1201:7::a.
Mail Servers
Incoming mail for coreoptics.com is delivered via three mail servers: aer-mx-01.cisco.com, alln-mx-01.cisco.com and rcdn-mx-01.cisco.com.
coreoptics.com shares at least some of its mail servers with other domains — for example ebc.cisco.com, meraki.com, winplc.com and two more.
It is common to find these mail servers paired with the mail servers mail1.dynamicsoft.com.
Each of aer-mx-01.cisco.com, alln-mx-01.cisco.com and rcdn-mx-01.cisco.com points to two IP numbers. aer-mx-01.cisco.com points to 173.38.212.150 and 2001:420:4621::ad26:d496. alln-mx-01.cisco.com points to 173.37.147.230 and 2001:420:1201:6::ad25:93e6. rcdn-mx-01.cisco.com points to 72.163.7.166 and 2001:420:1101:7::48a3:166.