`ac.nowcoder.com`

	CNAME	`alb-u1stot2oz9h0uyhj0h.internal.cn-hangzhou.alb.aliyuncs.com`
	DNSSEC	⚠️ Not signed
	A	47.97.112.14^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
	A	118.178.98.27^{🇨🇳 Alibaba-Cloud118.178.0.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
	A	120.26.214.62^{🇨🇳 Alibaba-Cloud120.26.0.0/16}
	A	120.55.73.111^{🇨🇳 Alibaba-Cloud120.55.0.0/17}
	A	121.41.113.57^{🇨🇳 Alibaba-Cloud121.40.0.0/15}
	A	121.43.52.58^{🇨🇳 Alibaba-Cloud121.42.0.0/15}

`nowcoder.com`

	DNSSEC	⚠️ Not signed
	A	121.43.185.253^{🇨🇳 Alibaba-Cloud121.42.0.0/15}
	NS	`ns3.dnsv4.com` ⭐
	NS	`ns4.dnsv4.com`
	MX	`mxbiz1.qq.com` ⭐
	MX	`mxbiz2.qq.com`⁽¹⁰⁾
	TXT	`v=spf1 include:spf.mail.qq.com ~all`
	TXT	`aliyun-site-verification=036badcd-111f-405f-a715-99c01cc12372`
	TXT	`201706220000002efs425ud2ws6c2hynrjo3wcwk147dpqqow30ay9mkzpr6xd21`
	SOA	`ns3.dnsv4.com`enterprise2dnsadmin@dnspod.com serial=1781258218

rank #42117 globally
rank #20570 in the tld
📈 Tranco rank: #48,308

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DNS History

2 records (1 active, 1 former)

○A101.37.129.812020-02-11 → 2020-02-11 · 3 obs

● 2020-02-11 04:27:28
○ 2026-02-22 16:20:08
○ 2026-06-28 20:40:30

●CNAMEalb-u1stot2oz9h0uyhj0h.internal.cn-hangzhou.alb.aliyuncs.com2026-02-22 → 2026-06-28 · 2 obs

● 2026-02-22 16:20:08
● 2026-06-28 20:40:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, l.gtld-servers.net...	-
nowcoder.com	ns3.dnsv4.com, ns4.dnsv4.com	18 records

✅ Authoritative Response

Server:1.12.0.24

NS records: ns3.dnsv4.com, ns4.dnsv4.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for nowcoder.com (unsigned zone)

⏱️ Timing

Total: 912ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`alb-u1stot2oz9h0uyhj0h.internal.cn-hangz`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (ns3.dnsv4.com, ns3.dnsv4.com, ns3.dnsv4.com...)

Analysis

IP Addresses

ac.nowcoder.com directs to 6 IP numbers: 47.97.112.14, 118.178.98.27, 120.26.214.62 and 3 other.

Additional host names — including alb-u1stot2oz9h0uyhj0h.internal.cn-hangzhou.alb.aliyuncs.com and 44zw.com — share IP numbers with ac.nowcoder.com.

ac.nowcoder.com - dns.ninja

ac.nowcoder.com

nowcoder.com