qa.91dev.tw - dns.ninja
qa.91dev.tw
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-154.awsdns-19.com ⭐ | ||||||
| A | 2600:9000:5300:9a00::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-154.awsdns-19.com | ||||||
| A | 205.251.192.154🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-154.awsdns-19.com | ||||||
| NS | ns-1342.awsdns-39.org | ||||||
| A | 2600:9000:5305:3e00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1342.awsdns-39.org | ||||||
| A | 205.251.197.62🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1342.awsdns-39.org | ||||||
| NS | ns-1779.awsdns-30.co.uk | ||||||
| A | 2600:9000:5306:f300::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1779.awsdns-30.co.uk | ||||||
| A | 205.251.198.243🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1779.awsdns-30.co.uk | ||||||
| NS | ns-870.awsdns-44.net | ||||||
| A | 2600:9000:5303:6600::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-870.awsdns-44.net | ||||||
| A | 205.251.195.102🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-870.awsdns-44.net | ||||||
| SOA | ns-154.awsdns-19.comawsdns-hostmaster@amazon.com serial=1 | ||||||
91dev.tw
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1512.awsdns-61.org ⭐ | ||||||
| NS | ns-2039.awsdns-62.co.uk | ||||||
| NS | ns-595.awsdns-10.net | ||||||
| NS | ns-9.awsdns-01.com | ||||||
| MX | inbound-smtp.us-west-2.amazonaws.com ⭐ | ||||||
| TXT | google-site-verification=T6Pw6AHMx8g7RHn5r9Du1LQLwAiJCTKH3Uc5cH94EGQgoogle-si... | ||||||
| SOA | ns-1512.awsdns-61.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
Subdomains
payments.qa.91dev.tw |
backoffice.qa.91dev.tw |
analytics.qa.91dev.tw |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns-1342.awsdns-39.org2026-03-16 → 2026-08-03 · 2 obs
● 2026-08-03 02:02:28
●NSns-154.awsdns-19.com2026-03-16 → 2026-08-03 · 2 obs
● 2026-08-03 02:02:28
●NSns-1779.awsdns-30.co.uk2026-03-16 → 2026-08-03 · 2 obs
● 2026-08-03 02:02:28
●NSns-870.awsdns-44.net2026-03-16 → 2026-08-03 · 2 obs
● 2026-08-03 02:02:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tw | a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw... | - |
| 91dev.tw | ns-1512.awsdns-61.org, ns-595.awsdns-10.net, ns-9.awsdns-01.com, ns-2039.awsdns-62.co.uk | - |
| qa.91dev.tw | ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net | - |
✅ Authoritative Response
Server:205.251.195.102
NS records: ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 91dev.tw (unsigned zone)
⏱️ Timing
Total: 1197ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1342.awsdns-39.org, ns-154.awsdns-19.com... |
| SOA | 1 | ns-154.awsdns-19.com awsdns-hostmaster.a |
Analysis
Hierarchy
payments.qa.91dev.tw, backoffice.qa.91dev.tw and analytics.qa.91dev.tw each fall under the parent domain qa.91dev.tw.
Name Servers
The domain qa.91dev.tw is delegated to these four name servers: ns-154.awsdns-19.com, ns-870.awsdns-44.net, ns-1342.awsdns-39.org and ns-1779.awsdns-30.co.uk.
qa.91dev.tw partially shares its NS delegation with several other domains, including vtlassociates.com, escaperabbit.com, startbrio.org and two others.
ns-154.awsdns-19.com, ns-870.awsdns-44.net, ns-1342.awsdns-39.org and ns-1779.awsdns-30.co.uk each carry two IP addresses. ns-154.awsdns-19.com has 205.251.192.154 and 2600:9000:5300:9a00::1; ns-870.awsdns-44.net has 205.251.195.102 and 2600:9000:5303:6600::1; ns-1342.awsdns-39.org has 205.251.197.62 and 2600:9000:5305:3e00::1; ns-1779.awsdns-30.co.uk has 205.251.198.243 and 2600:9000:5306:f300::1.