singularity.cx - robtex.com
singularity.cx
| DNSSEC | ⚠️ Not signed | ||||||
| A | 23.236.62.147🇺🇸 Google23.236.62.0/24 | ||||||
| PTR | 147.62.236.23.bc.googleusercontent.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 | ||||||
| TXT | "v=spf1 include:_spf.google.com ~all" | ||||||
| TXT | "v=spf1 ip4:23.239.218.0/24 ~all" | ||||||
| SOA | ns1.cisco.compostmaster@cisco.com serial=158 | ||||||
cx
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns.anycast.nic.cx ⭐ | ||||||
| NS | ns1.anycastdns.cz | ||||||
| NS | ns2.anycastdns.cz | ||||||
| TXT | Generation Time ISO 8601: 2026-07-15 23:23:46 | ||||||
| TXT | Generation Time: 1784157826 | ||||||
| SOA | ns.anycast.nic.cxhostmaster@coccaregistry.org 2026-07-15 #20 | ||||||
Same first word
Similar names
DNS History
7 records (7 active, 0 former)
●NSns1.cisco.com2026-06-09 → 2026-07-16 · 5 obs
● 2026-06-13 21:28:42
○ 2026-06-13 22:45:54
● 2026-07-11 20:44:18
● 2026-07-16 00:47:36
●NSns2.cisco.com2026-06-09 → 2026-07-16 · 5 obs
● 2026-06-13 21:28:42
○ 2026-06-13 22:45:54
● 2026-07-11 20:44:18
● 2026-07-16 00:47:36
●NSns3.cisco.com2026-06-09 → 2026-07-16 · 5 obs
● 2026-06-13 21:28:42
○ 2026-06-13 22:45:54
● 2026-07-11 20:44:18
● 2026-07-16 00:47:36
●MXaer-mx-01.cisco.com2026-06-09 → 2026-07-16 · 5 obs
● 2026-06-13 21:28:42
○ 2026-06-13 22:45:54
● 2026-07-11 20:44:18
● 2026-07-16 00:47:36
●MXalln-mx-01.cisco.com2026-06-09 → 2026-07-16 · 5 obs
● 2026-06-13 21:28:42
○ 2026-06-13 22:45:54
● 2026-07-11 20:44:18
● 2026-07-16 00:47:36
●MXrcdn-mx-01.cisco.com2026-06-09 → 2026-07-16 · 5 obs
● 2026-06-13 21:28:42
○ 2026-06-13 22:45:54
● 2026-07-11 20:44:18
● 2026-07-16 00:47:36
●A23.236.62.1472026-06-09 → 2026-07-16 · 5 obs
● 2026-06-13 21:28:42
○ 2026-06-13 22:45:54
● 2026-07-11 20:44:18
● 2026-07-16 00:47:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cx | ns.anycast.nic.cx, ns1.anycastdns.cz, ns2.anycastdns.cz | 5 records |
| singularity.cx | ns1.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 singularity.cx (unsigned zone)
⏱️ Timing
Total: 653ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.236.62.147 |
| NS | 3 | ns2.cisco.com, ns1.cisco.com... |
| MX | 3 | alln-mx-01.cisco.com (pri: 1), rcdn-mx-01.cisco.com (pri: 20)... |
| TXT | 2 | "v=spf1 include:_spf.google.com ~all", "v=spf1 ip4:23.239.218.0/24 ~all" |
| SOA | 1 | ns1.cisco.com postmaster.cisco.com |
📌 Glue Records Collected
Total: 5
In-bailiwick: 2 (ns.anycast.nic.cx, ns.anycast.nic.cx)
Out-of-bailiwick: 3 (ns1.anycastdns.cz, ns2.anycastdns.cz, ns1.anycastdns.cz)
Analysis
IP Addresses
singularity.cx has exactly one IP address — 23.236.62.147.
bluerailprocessing.com, cesellatoreriva.com, allbulldogs.com plus two other host names have IP numbers in common with singularity.cx.
Name Servers
singularity.cx has three name servers — ns1.cisco.com, ns2.cisco.com and ns3.cisco.com.
singularity.cx has at least partial name server overlap with other domains, such as myciscocommunity.com, ciscohumannetwork.net, ciscolela.mobi and two others.
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
singularity.cx has three mail servers: aer-mx-01.cisco.com, alln-mx-01.cisco.com and rcdn-mx-01.cisco.com.
At least some of the mail servers used by singularity.cx are shared with other domains: neopathnetworks.com, kennasecurity.com, teltier.org and two others among them.
These mail servers tend to be used in combination with the mail servers mail1.dynamicsoft.com and rtp-mx-01.cisco.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.