backoffice.qa.91dev.tw - dns.ninja

`backoffice.qa.91dev.tw`

CNAME	`d3y2l5kktvuif.cloudfront.net`
DNSSEC	⚠️ Not signed
A	3.169.252.24^{🇺🇸 Amazon3.169.252.0/23}
		PTR	`server-3-169-252-24.lax54.r.cloudfront.net`
A	3.169.252.30^{🇺🇸 Amazon3.169.252.0/23}
A	3.169.252.84^{🇺🇸 Amazon3.169.252.0/23}
A	3.169.252.113^{🇺🇸 Amazon3.169.252.0/23}
NS	`ns-1553.awsdns-02.co.uk` ⭐
		A	2600:9000:5306:1100::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1553.awsdns-02.co.uk`
		A	205.251.198.17^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1553.awsdns-02.co.uk`
NS	`ns-106.awsdns-13.com`
		A	2600:9000:5300:6a00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-106.awsdns-13.com`
		A	205.251.192.106^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-106.awsdns-13.com`
NS	`ns-1456.awsdns-54.org`
		A	2600:9000:5305:b000::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1456.awsdns-54.org`
		A	205.251.197.176^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1456.awsdns-54.org`
NS	`ns-546.awsdns-04.net`
		A	2600:9000:5302:2200::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-546.awsdns-04.net`
		A	205.251.194.34^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-546.awsdns-04.net`
HTTPS	HTTP/2
SOA	`ns-1553.awsdns-02.co.uk`awsdns-hostmaster@amazon.com serial=1

`qa.91dev.tw`

	DNSSEC	⚠️ Not signed
	NS	`ns-154.awsdns-19.com` ⭐
	NS	`ns-1342.awsdns-39.org`
	NS	`ns-1779.awsdns-30.co.uk`
	NS	`ns-870.awsdns-44.net`
	SOA	`ns-154.awsdns-19.com`awsdns-hostmaster@amazon.com serial=1

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Similar names

officeback.info

DNS History

1 record (1 active, 0 former)

●CNAMEd3y2l5kktvuif.cloudfront.net2026-03-16 → 2026-08-04 · 2 obs

● 2026-03-16 11:52:54
● 2026-08-04 03:46:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tw	a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...	-
91dev.tw	ns-595.awsdns-10.net, ns-1512.awsdns-61.org, ns-2039.awsdns-62.co.uk, ns-9.awsdns-01.com	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
qa.91dev.tw	ns-1342.awsdns-39.org, ns-154.awsdns-19.com, ns-1779.awsdns-30.co.uk, ns-870.awsdns-44.net	-
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:205.251.192.154

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: 1397ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`d3y2l5kktvuif.cloudfront.net`

Analysis

IP Addresses

backoffice.qa.91dev.tw has four IP addresses: 3.169.252.24, 3.169.252.30, 3.169.252.84 and 3.169.252.113.

server-3-169-252-30.lax54.r.cloudfront.net, www.dwwfest.be, d30u0k9mdney4u.cloudfront.net plus two other host names have IP numbers in common with backoffice.qa.91dev.tw.

Name Servers

Four name servers handle the delegation for backoffice.qa.91dev.tw: ns-106.awsdns-13.com, ns-546.awsdns-04.net, ns-1456.awsdns-54.org and ns-1553.awsdns-02.co.uk.

backoffice.qa.91dev.tw partially shares its NS delegation with several other domains, including construction-sources.com, netvoyage.biz, 755bet33.com and two others.

ns-106.awsdns-13.com, ns-546.awsdns-04.net, ns-1456.awsdns-54.org and ns-1553.awsdns-02.co.uk each carry two IP addresses. ns-106.awsdns-13.com has 205.251.192.106 and 2600:9000:5300:6a00::1; ns-546.awsdns-04.net has 205.251.194.34 and 2600:9000:5302:2200::1; ns-1456.awsdns-54.org has 205.251.197.176 and 2600:9000:5305:b000::1; ns-1553.awsdns-02.co.uk has 205.251.198.17 and 2600:9000:5306:1100::1.