`api.21days.cloud`

	CNAME	`alb-2ta41anqdg9z1qz7ks.cn-zhangjiakou.alb.aliyuncsslb.com`
	DNSSEC	⚠️ Not signed
	A	39.99.149.131^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
	A	47.92.55.74^{🇨🇳 Alibaba-Cloud47.92.0.0/15 CT BeiJing IDC}

`21days.cloud`

	DNSSEC	⚠️ Not signed
	A	39.99.153.62^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
	NS	`dns13.hichina.com` ⭐
	NS	`dns14.hichina.com`
	MX	`mxbiz1.qq.com` ⭐
	MX	`mxbiz2.qq.com`⁽¹⁰⁾
	TXT	`v=spf1 include:spf.mail.qq.com ~all`
	SOA	`dns13.hichina.com`hostmaster@hichina.com 2026-01-12 #9

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DNS History

1 record (1 active, 0 former)

●CNAMEalb-2ta41anqdg9z1qz7ks.cn-zhangjiakou.alb.aliyuncsslb.com2026-05-14 → 2026-08-05 · 2 obs

● 2026-05-14 03:59:48
● 2026-08-05 04:09:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cloud	ns10.trs-dns.org, ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.info	8 records
21days.cloud	dns13.hichina.com, dns14.hichina.com	-

✅ Authoritative Response

Server:139.224.142.121

NS records: dns13.hichina.com, dns14.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21days.cloud (unsigned zone)

⏱️ Timing

Total: 3149ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`alb-2ta41anqdg9z1qz7ks.cn-zhangjiakou.al`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns10.trs-dns.info, ns10.trs-dns.org, ns01.trs-dns.net...)

Analysis

IP Addresses

api.21days.cloud resolves to the IP addresses 39.99.149.131 and 47.92.55.74

Other host names, such as alb-2ta41anqdg9z1qz7ks.cn-zhangjiakou.alb.aliyuncsslb.com, share IP numbers with api.21days.cloud.

api.21days.cloud - robtex.com

api.21days.cloud

21days.cloud