duomaster.com - dns.ninja
duomaster.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-170.awsdns-21.com ⭐ | ||||||
| A | 2600:9000:5300:aa00::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-170.awsdns-21.com | ||||||
| A | 205.251.192.170🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-170.awsdns-21.com | ||||||
| NS | ns-1352.awsdns-41.org | ||||||
| A | 2600:9000:5305:4800::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1352.awsdns-41.org | ||||||
| A | 205.251.197.72🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1352.awsdns-41.org | ||||||
| NS | ns-1786.awsdns-31.co.uk | ||||||
| A | 2600:9000:5306:fa00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1786.awsdns-31.co.uk | ||||||
| A | 205.251.198.250🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1786.awsdns-31.co.uk | ||||||
| NS | ns-819.awsdns-38.net | ||||||
| A | 2600:9000:5303:3300::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-819.awsdns-38.net | ||||||
| A | 205.251.195.51🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-819.awsdns-38.net | ||||||
| SOA | ns-170.awsdns-21.comhostmaster@sekisuiplastics.co.jp 2012-10-21 #7 | ||||||
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=1786359019 | ||||||
Same first word
duomaster.com |
Similar names
DNS History
7 records (4 active, 3 former)
●NSns-1352.awsdns-41.org2026-05-02 → 2026-08-10 · 3 obs
● 2026-05-02 11:42:24
● 2026-08-10 11:01:28
●NSns-170.awsdns-21.com2026-05-02 → 2026-08-10 · 3 obs
● 2026-05-02 11:42:24
● 2026-08-10 11:01:28
●NSns-1786.awsdns-31.co.uk2026-05-02 → 2026-08-10 · 3 obs
● 2026-05-02 11:42:24
● 2026-08-10 11:01:28
●NSns-819.awsdns-38.net2026-05-02 → 2026-08-10 · 3 obs
● 2026-05-02 11:42:24
● 2026-08-10 11:01:28
○NSns1.sekisuiplastics.co.jp2015-08-05 → 2017-08-27 · 4 obs
● 2017-08-27 23:23:16
○ 2026-05-02 11:42:24
○ 2026-08-10 11:01:28
○NSns2.sekisuiplastics.co.jp2015-08-05 → 2017-08-27 · 4 obs
● 2017-08-27 23:23:16
○ 2026-05-02 11:42:24
○ 2026-08-10 11:01:28
○NSsekisui-nt12vm2015-08-05 → 2017-08-27 · 4 obs
● 2017-08-27 23:23:16
○ 2026-05-02 11:42:24
○ 2026-08-10 11:01:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| duomaster.com | ns-170.awsdns-21.com, ns-819.awsdns-38.net, ns-1786.awsdns-31.co.uk, ns-1352.awsdns-41.org | 2 records |
✅ Authoritative Response
Server:205.251.198.250
NS records: ns-170.awsdns-21.com, ns-819.awsdns-38.net, ns-1786.awsdns-31.co.uk, ns-1352.awsdns-41.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duomaster.com (unsigned zone)
⏱️ Timing
Total: 344ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1352.awsdns-41.org, ns-170.awsdns-21.com... |
| SOA | 1 | ns-170.awsdns-21.com hostmaster.sekisuip |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-170.awsdns-21.com, ns-170.awsdns-21.com)
Analysis
Name Servers
duomaster.com has four authoritative name servers: ns-170.awsdns-21.com, ns-819.awsdns-38.net, ns-1352.awsdns-41.org and ns-1786.awsdns-31.co.uk.
At least some of duomaster.com's name servers are shared with other domains, for example pobres.com.br, childrensspecialized.org, ridwater.ca and two more.
Four hostnames, each resolving to a pair of IP addresses: ns-170.awsdns-21.com directs to 205.251.192.170 and 2600:9000:5300:aa00::1; ns-819.awsdns-38.net directs to 205.251.195.51 and 2600:9000:5303:3300::1; ns-1352.awsdns-41.org directs to 205.251.197.72 and 2600:9000:5305:4800::1; ns-1786.awsdns-31.co.uk directs to 205.251.198.250 and 2600:9000:5306:fa00::1.