🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stackunderflow.ai`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:3ffc^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:adb2^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.63.252^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.173.178^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`houston.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c34^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`houston.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c334^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`houston.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2334^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`houston.ns.cloudflare.com`
		A	108.162.195.52^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`houston.ns.cloudflare.com`
		A	162.159.44.52^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`houston.ns.cloudflare.com`
		A	172.64.35.52^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`houston.ns.cloudflare.com`
NS	`sara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a90^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c090^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2090^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sara.ns.cloudflare.com`
		A	108.162.192.144^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	172.64.32.144^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	173.245.58.144^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
MX	`mx1.feishu.cn` ⭐
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.feishu.cn`⁽⁵⁾
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
MX	`mx3.feishu.cn`⁽¹⁰⁾
		A	52.220.106.220^{🇸🇬 Amazon52.220.0.0/15 SIN prefix}
			PTR	`ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.225^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.229.0^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`google-site-verification=IC3cHPklxPAFvxR2clOCSP9q_fW3lx7ov6DGqb-N-qI`
TXT	`v=spf1 +include:_netblocks.m.feishu.cn -all`
TXT	`verification-code-site-App_feishu=WpvyTnPn6SRTHJ3a3GZL`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.63.252, 172.67.173.178
		IPv6 hints	2606:4700:3030::6815:3ffc, 2606:4700:3037::ac43:adb2
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=16, name=cloudflare-ech.com
SOA	`houston.ns.cloudflare.com`dns@cloudflare.com serial=2411808049

`ai`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.ai` ⭐
	NS	`v0n1.nic.ai`
	NS	`v0n2.nic.ai`
	NS	`v0n3.nic.ai`
	NS	`v2n0.nic.ai`
	NS	`v2n1.nic.ai`
	SOA	`v0n0.nic.ai`hostmaster@donuts.email serial=1788722712

Same first word

stackunderflow.net

stackunderflow.com

stackunderflow.no

stackunderflow.org

stackunderflow.ai

Similar names

stuckanderflow.com

Previous names

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DNS History

13 records (9 active, 4 former)

●NShouston.ns.cloudflare.com2026-09-02 → 2026-09-06 · 2 obs

● 2026-09-02 06:20:56
● 2026-09-06 19:34:58

●NSsara.ns.cloudflare.com2026-09-02 → 2026-09-06 · 2 obs

● 2026-09-02 06:20:56
● 2026-09-06 19:34:58

●MXmx1.feishu.cn2026-09-02 → 2026-09-06 · 2 obs

● 2026-09-02 06:20:56
● 2026-09-06 19:34:58

●MXmx2.feishu.cn2026-09-02 → 2026-09-06 · 2 obs

● 2026-09-02 06:20:56
● 2026-09-06 19:34:58

●MXmx3.feishu.cn2026-09-02 → 2026-09-06 · 2 obs

● 2026-09-02 06:20:56
● 2026-09-06 19:34:58

●A104.21.63.2522026-09-05 → 2026-09-06 · 3 obs

○ 2026-09-02 06:20:56
● 2026-09-05 20:22:46
● 2026-09-06 19:34:58

●A172.67.173.1782026-09-05 → 2026-09-06 · 3 obs

○ 2026-09-02 06:20:56
● 2026-09-05 20:22:46
● 2026-09-06 19:34:58

○A188.114.96.02026-09-02 → 2026-09-02 · 3 obs

● 2026-09-02 06:20:56
○ 2026-09-05 20:22:46
○ 2026-09-06 19:34:58

○A188.114.97.02026-09-02 → 2026-09-02 · 3 obs

● 2026-09-02 06:20:56
○ 2026-09-05 20:22:46
○ 2026-09-06 19:34:58

●A2606:4700:3030::6815:3ffc2026-09-05 → 2026-09-06 · 3 obs

○ 2026-09-02 06:20:56
● 2026-09-05 20:22:46
● 2026-09-06 19:34:58

●A2606:4700:3037::ac43:adb22026-09-05 → 2026-09-06 · 3 obs

○ 2026-09-02 06:20:56
● 2026-09-05 20:22:46
● 2026-09-06 19:34:58

○A2a06:98c1:3120::2026-09-02 → 2026-09-02 · 3 obs

● 2026-09-02 06:20:56
○ 2026-09-05 20:22:46
○ 2026-09-06 19:34:58

○A2a06:98c1:3121::2026-09-02 → 2026-09-02 · 3 obs

● 2026-09-02 06:20:56
○ 2026-09-05 20:22:46
○ 2026-09-06 19:34:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ai	v0n0.nic.ai, v0n1.nic.ai, v0n2.nic.ai, v0n3.nic.ai...	12 records
stackunderflow.ai	sara.ns.cloudflare.com, houston.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.52

NS records: sara.ns.cloudflare.com, houston.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackunderflow.ai (unsigned zone)

⏱️ Timing

Total: 1040ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.173.178, 104.21.63.252`
AAAA	2	`2606:4700:3030::6815:3ffc, 2606:4700:3037::ac43:adb2`
NS	2	`houston.ns.cloudflare.com, sara.ns.cloudflare.com`
MX	3	`mx1.feishu.cn (pri: 1), mx3.feishu.cn (pri: 10)...`
TXT	3	`google-site-verification=IC3cHPklxPAFvxR, v=spf1 +include:_netblocks.m.feishu.cn -...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`houston.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.ai, v0n1.nic.ai, v0n2.nic.ai...)

Analysis

IP Addresses

stackunderflow.ai has four IP addresses: 104.21.63.252, 172.67.173.178, 2606:4700:3030::6815:3ffc and 2606:4700:3037::ac43:adb2.

stratham.life, ab101.xyz, connectgroove.click and two other host names share IP numbers with stackunderflow.ai.

Name Servers

stackunderflow.ai is served by two delegated name servers, houston.ns.cloudflare.com and sara.ns.cloudflare.com.

stackunderflow.ai uses the same name servers as several other domains — among them laserlmn-com.pages.dev, ineuron.ai, secretinvite245.pages.dev and two more.

stackunderflow.ai partially shares its NS delegation with several other domains, including gt9gt9.com, niteanddaymdcgadog.com, tianyou.beauty and two others.

These name servers regularly co-occur with the name servers erin.ns.cloudflare.com, ali.ns.cloudflare.com and carter.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

houston.ns.cloudflare.com carries IP addresses 108.162.195.52, 162.159.44.52 and 172.64.35.52, with 3 other addresses beyond those.

sara.ns.cloudflare.com carries IP addresses 108.162.192.144, 172.64.32.144 and 173.245.58.144, with 3 other addresses beyond those.

Mail Servers

stackunderflow.ai uses three mail servers — mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

stackunderflow.ai has at least partial mail server overlap with other domains such as potianstudio.com, idc.gs, popsede.com and two more.

Hostnames that resolve to three IP addresses:

mx3.feishu.cn resolves to three addresses: 52.220.106.220, 101.126.58.225 and 122.14.229.0.

Hostnames that resolve to two IP addresses:

mx2.feishu.cn maps to two IP addresses — 101.126.58.225 and 122.14.229.0.

Hosts with just one IP address:

mx1.feishu.cn points to the IP address 52.220.106.220.

These two host names — mx3.feishu.cn and mx1.feishu.cn — each point to 52.220.106.220 IP addresses.

These two host names — mx3.feishu.cn and mx2.feishu.cn — each point to 101.126.58.225 IP addresses.

These two host names — mx3.feishu.cn and mx2.feishu.cn — each point to 122.14.229.0 IP addresses.

stackunderflow.ai - robtex.com