`nexu.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:d21c^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:1033^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.51^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.210.28^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`martha.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:268e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c28e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`martha.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:228e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`martha.ns.cloudflare.com`
		A	108.162.194.142^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
		A	162.159.38.142^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
		A	172.64.34.142^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`martha.ns.cloudflare.com`
NS	`valentin.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cce^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ce^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`valentin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ce^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`valentin.ns.cloudflare.com`
		A	108.162.195.206^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	162.159.44.206^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	172.64.35.206^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.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=OCiPciUYIOnMQ5w_K9UO-M4exKAUmRxW1RAXopwHv5o`
TXT	`google-site-verification=bXNzumUqyy0ovMCj7rtsBjPatlaq23FrM9QHD1-a8cI`
TXT	`v=spf1 +include:_netblocks.m.feishu.cn -all`
TXT	`v=spf1 +include:_netblocks.m.feishu.cn include:_spf.google.com ~all`
TXT	`verification-code-site-App_feishu=092RDxzrwHwyu7ZkzttO`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.51, 172.67.210.28
		IPv6 hints	2606:4700:3032::ac43:d21c, 2606:4700:3035::6815:1033
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=9, name=cloudflare-ech.com
SOA	`martha.ns.cloudflare.com`dns@cloudflare.com serial=2401118516

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1776015807

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DNS History

9 records (9 active, 0 former)

●NSmartha.ns.cloudflare.com2026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●NSvalentin.ns.cloudflare.com2026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●MXmx1.feishu.cn2026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●MXmx2.feishu.cn2026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●MXmx3.feishu.cn2026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●A104.21.16.512026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●A172.67.210.282026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●A2606:4700:3032::ac43:d21c2026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

●A2606:4700:3035::6815:10332026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 10:33:52
● 2026-04-12 18:15:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
nexu.io	valentin.ns.cloudflare.com, martha.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.142

NS records: valentin.ns.cloudflare.com, martha.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for nexu.io (unsigned zone)

⏱️ Timing

Total: 601ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.210.28, 104.21.16.51`
AAAA	2	`2606:4700:3035::6815:1033, 2606:4700:3032::ac43:d21c`
NS	2	`martha.ns.cloudflare.com, valentin.ns.cloudflare.com`
MX	3	`mx1.feishu.cn (pri: 1), mx3.feishu.cn (pri: 10)...`
TXT	5	`google-site-verification=OCiPciUYIOnMQ5w, google-site-verification=bXNzumUqyy0ovMC...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`martha.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

Four IP numbers are pointed to by nexu.io: 2606:4700:3032::ac43:d21c, 2606:4700:3035::6815:1033, 104.21.16.51 and 172.67.210.28.

other host names including www.privilegedetail.com, pursevalley-factory.ru, ecogreenohio.com, psts.gr and le(0x74697473)ound.ru share IP numbers with nexu.io.

Name Servers

nexu.io is delegated to two name servers martha.ns.cloudflare.com and valentin.ns.cloudflare.com.

nexu.io shares the same name server setup as other domains, for instance movies-mania.com, global-footer.com, saradujour.me, jcchdqi.org and chatgpt-apk.com.

nexu.io at least partially shares name servers with other domains, for instance ornasfiske.se, worldvisiontreks.com, yudemachine.com, my-dailythoughts.com and alonbyacarian.com.

These name servers are commonly used with duke.ns.cloudflare.com, katelyn.ns.cloudflare.com and marge.ns.cloudflare.com.

Host names with six IP numbers:

Host name martha.ns.cloudflare.com points to: 2606:4700:50::a29f:268e, 2803:f800:50::6ca2:c28e, 2a06:98c1:50::ac40:228e, 108.162.194.142, 162.159.38.142 and 172.64.34.142.

Host name valentin.ns.cloudflare.com points to: 2606:4700:58::a29f:2cce, 2803:f800:50::6ca2:c3ce, 2a06:98c1:50::ac40:23ce, 108.162.195.206, 162.159.44.206 and 172.64.35.206.

Mail Servers

nexu.io is handled by three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

nexu.io shares some mail servers with other domains, at least partially, for instance crazyforcode.org, xiaoying.tv, dusense.com, queenclip.com and wumart.com.