coremath.com - robtex.com
coremath.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.115.77.36🇺🇸 SWITCH-1216.115.77.0/24 Route for Downstream Customer Switch | ||||||
| PTR | switch.com | ||||||
| NS | ns1.switch.com ⭐ | ||||||
| A | 66.209.64.20🇺🇸 SWITCH-166.209.64.0/24 | ||||||
| PTR | ns1.switchnap.com | ||||||
| NS | ns2.switch.com | ||||||
| A | 66.209.64.21🇺🇸 SWITCH-166.209.64.0/24 | ||||||
| PTR | ns2.switchnap.com | ||||||
| SOA | ns1.switch.comhostmaster@switch.com 2017-01-03 #11 | ||||||
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=1784633787 | ||||||
Same first word
coremath.com |
Similar names
DNS History
6 records (3 active, 3 former)
○NSns1.searchabc.com2015-08-20 → 2015-12-07 · 4 obs
● 2015-12-07 01:53:30
○ 2020-04-01 05:44:44
○ 2026-07-21 11:51:54
●NSns1.switch.com2020-04-01 → 2026-07-21 · 3 obs
● 2020-04-01 05:44:44
● 2026-07-21 11:51:54
●NSns2.switch.com2020-04-01 → 2026-07-21 · 3 obs
● 2020-04-01 05:44:44
● 2026-07-21 11:51:54
○MXmail.coremath.com2015-08-20 → 2015-12-07 · 4 obs
● 2015-12-07 01:53:30
○ 2020-04-01 05:44:44
○ 2026-07-21 11:51:54
●A216.115.77.362020-04-01 → 2026-07-21 · 3 obs
● 2020-04-01 05:44:44
● 2026-07-21 11:51:54
○A64.74.172.1252015-08-20 → 2015-12-07 · 4 obs
● 2015-12-07 01:53:30
○ 2020-04-01 05:44:44
○ 2026-07-21 11:51:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| coremath.com | ns1.switch.com, ns2.switch.com | 2 records |
✅ Authoritative Response
Server:66.209.64.21
NS records: ns1.switch.com, ns2.switch.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coremath.com (unsigned zone)
⏱️ Timing
Total: 1296ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.115.77.36 |
| NS | 2 | ns2.switch.com, ns1.switch.com |
| SOA | 1 | ns1.switch.com hostmaster.switch.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.switch.com, ns2.switch.com)
Analysis
IP Addresses
coremath.com directs to one IP number, which is 216.115.77.36.
Among the host names that share IP numbers with coremath.com are supernap.org, edgecores.com, coreconnected.net and two others.
Name Servers
coremath.com is served by two delegated name servers, ns1.switch.com and ns2.switch.com.
coremath.com has the same name server delegation as a number of other domains, such as 3.127.206.in-addr.arpa, 190.222.206.in-addr.arpa, adc2.datafoundry.com and two more.
coremath.com has at least partial name server overlap with other domains, such as 14.99.209.in-addr.arpa, 85.115.216.in-addr.arpa, 77.115.216.in-addr.arpa and two others.
dns1.datafoundry.com, dns2.datafoundry.com and ns1.switchnap.com — plus 4 other name servers — are commonly paired with these name servers.
ns1.switch.com directs to 66.209.64.20 and ns2.switch.com directs to 66.209.64.21; each host name points to exactly one IP number.