sierra-edu.com - robtex.com
sierra-edu.com
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=1775931617 | ||||||
Same first word
sierra-edu.com |
DNS History
6 records (5 active, 1 former)
●NSns41.domaincontrol.com2015-06-19 → 2026-04-11 · 2 obs
● 2026-04-11 18:37:24
●NSns42.domaincontrol.com2015-06-19 → 2026-04-11 · 2 obs
● 2026-04-11 18:37:24
●MXsierraedu-com01e.mail.protection.outlook.com2015-06-19 → 2026-04-11 · 2 obs
● 2026-04-11 18:37:24
●A15.197.148.332026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:37:22
● 2026-04-11 18:37:24
○A184.168.221.462015-06-19 → 2017-10-01 · 4 obs
● 2017-10-01 07:06:32
○ 2026-04-11 18:37:22
○ 2026-04-11 18:37:24
●A3.33.130.1902026-04-11 → 2026-04-11 · 3 obs
● 2026-04-11 18:37:22
● 2026-04-11 18:37:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, e.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net... | - |
| sierra-edu.com | ns41.domaincontrol.com, ns42.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.100.21
NS records: ns41.domaincontrol.com, ns42.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sierra-edu.com (unsigned zone)
⏱️ Timing
Total: 145ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 3.33.130.190, 15.197.148.33 |
| NS | 2 | ns41.domaincontrol.com, ns42.domaincontrol.com |
| MX | 1 | sierraedu-com01e.mail.protection.outlook |
| TXT | 2 | v=spf1 include:spf.protection.outlook.co, v=verifydomain MS=1730170 |
| SOA | 1 | ns41.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns41.domaincontrol.com, ns41.domaincontrol.com, ns42.domaincontrol.com...)
Analysis
IP Addresses
sierra-edu.com resolves to two IP numbers: 3.33.130.190 and 15.197.148.33.
other host names including evasdream.com, pricelessdiamonds.com, aquatic.solutions, altstadtstudio.com and caepaustralia.org share IP numbers with sierra-edu.com.
Name Servers
sierra-edu.com is delegated to two name servers ns41.domaincontrol.com and ns42.domaincontrol.com.
sierra-edu.com shares the same name server setup as other domains, for instance systmatrix.com, thecoachesoffice.com, agafert.net, oxbridgeproducts.com and gcollectables.com.
sierra-edu.com at least partially shares name servers with other domains, for instance teachersclubs.in.
Host names with two IP numbers:
The host name ns41.domaincontrol.com points to 2603:5:2142::15 and 97.74.100.21; the host name ns42.domaincontrol.com points to 2603:5:2242::15 and 173.201.68.21.
Mail Servers
sierra-edu.com is handled by a single mail server, sierraedu-com01e.mail.protection.outlook.com.
Host sierraedu-com01e.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c92c::1, 2a01:111:f403:c946::5, 2a01:111:f403:f802::1, 2a01:111:f403:f90a::, 52.101.9.14, 52.101.10.8, 52.101.11.19 and 52.101.41.54.