engineeringmaths.com - dns.ninja
engineeringmaths.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1435.awsdns-51.org ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5305:9b00::1Amazon2600:9000:5305::/48 - CloudFront | ||||||
| A | 205.251.197.155Amazon205.251.197.0/24 prefix | ||||||
| NS | ns-1943.awsdns-50.co.uk ⚠️ Not in zone NS records | ||||||
| NS | ns-505.awsdns-63.com ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5301:f900::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-505.awsdns-63.com | ||||||
| A | 205.251.193.249🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-505.awsdns-63.com | ||||||
| NS | ns-556.awsdns-05.net ⚠️ Not in zone NS records | ||||||
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=1792706031 | ||||||
Previous names
Next names
DNS History
6 records (4 active, 2 former)
●NSns-1435.awsdns-51.org2026-10-22 → 2026-10-22 · 3 obs
● 2026-10-22 22:00:02
● 2026-10-22 22:00:06
●NSns-1943.awsdns-50.co.uk2026-10-22 → 2026-10-22 · 3 obs
● 2026-10-22 22:00:02
● 2026-10-22 22:00:06
●NSns-505.awsdns-63.com2026-10-22 → 2026-10-22 · 3 obs
● 2026-10-22 22:00:02
● 2026-10-22 22:00:06
●NSns-556.awsdns-05.net2026-10-22 → 2026-10-22 · 3 obs
● 2026-10-22 22:00:02
● 2026-10-22 22:00:06
○NSns0-e.dns.pipex.net2015-07-26 → 2017-04-06 · 4 obs
● 2017-04-06 23:27:32
○ 2026-10-22 22:00:02
○ 2026-10-22 22:00:06
○NSns1-e.dns.pipex.net2015-07-26 → 2017-04-06 · 4 obs
● 2017-04-06 23:27:32
○ 2026-10-22 22:00:02
○ 2026-10-22 22:00:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net, a.gtld-servers.net... | - |
| engineeringmaths.com | ns-556.awsdns-05.net, ns-505.awsdns-63.com, ns-1943.awsdns-50.co.uk, ns-1435.awsdns-51.org | 2 records |
✅ Authoritative Response
Server:205.251.193.249
NS records: ns-556.awsdns-05.net, ns-505.awsdns-63.com, ns-1943.awsdns-50.co.uk, ns-1435.awsdns-51.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
Root DNSKEY fetch failed: Error: connect EADDRNOTAVAIL 198.41.0.4:53 - Local (0.0.0.0:0)
⏱️ Timing
Total: 1281ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-505.awsdns-63.com, ns-505.awsdns-63.com)
Analysis
Name Servers
The NS records for engineeringmaths.com point to four name servers: ns-505.awsdns-63.com, ns-556.awsdns-05.net, ns-1435.awsdns-51.org and ns-1943.awsdns-50.co.uk.
ns-505.awsdns-63.com and ns-1435.awsdns-51.org each resolve to two IP addresses: ns-505.awsdns-63.com points to 205.251.193.249 and 2600:9000:5301:f900::1, while ns-1435.awsdns-51.org points to 205.251.197.155 and 2600:9000:5305:9b00::1.