`usduc.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:b132^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:3b77^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.59.119^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.177.50^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kristin.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ab5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kristin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kristin.ns.cloudflare.com`
		A	108.162.192.181^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
		A	172.64.32.181^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
		A	173.245.58.181^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristin.ns.cloudflare.com`
NS	`woz.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b96^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c196^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`woz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2196^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`woz.ns.cloudflare.com`
		A	108.162.193.150^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	172.64.33.150^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	173.245.59.150^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
MX	`eforward1.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward2.registrar-servers.com` ⭐
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward3.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`mx1.privateemail.com` ⭐
		A	162.255.118.7^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`mx1.privateemail.com`
MX	`mx2.privateemail.com` ⭐
		A	162.255.118.8^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`mx2.privateemail.com`
MX	`eforward4.registrar-servers.com`⁽¹⁵⁾
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward5.registrar-servers.com`⁽²⁰⁾
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
TXT	`google-site-verification=ES4iwzwdDACg5mbaMbKNb5j0vZGf3qVk2n7iyRqLFkg`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com ~all`
TXT	`v=spf1 include:spf.privateemail.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.59.119, 172.67.177.50
		IPv6	2606:4700:3033::ac43:b132, 2606:4700:3034::6815:3b77
SOA	`kristin.ns.cloudflare.com`dns@cloudflare.com serial=2395185550

`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=1772955538

Same first word

usduc.io

Similar names

udcus.com

cduus.com

ducsu.com

duscu.com

ducus.com

usdcu.com

ucdus.com

DNS History

17 records (13 active, 4 former)

●NSkristin.ns.cloudflare.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●NSwoz.ns.cloudflare.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●MXeforward1.registrar-servers.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●MXeforward2.registrar-servers.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●MXeforward3.registrar-servers.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●MXeforward4.registrar-servers.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●MXeforward5.registrar-servers.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●MXmx1.privateemail.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●MXmx2.privateemail.com2026-03-06 → 2026-03-09 · 2 obs

● 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●A104.21.59.1192026-03-09 → 2026-03-09 · 2 obs

○ 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●A172.67.177.502026-03-09 → 2026-03-09 · 2 obs

○ 2026-03-06 11:04:04
● 2026-03-09 11:04:18

○A188.114.96.02026-03-06 → 2026-03-06 · 2 obs

● 2026-03-06 11:04:04
○ 2026-03-09 11:04:18

○A188.114.97.02026-03-06 → 2026-03-06 · 2 obs

● 2026-03-06 11:04:04
○ 2026-03-09 11:04:18

●A2606:4700:3033::ac43:b1322026-03-09 → 2026-03-09 · 2 obs

○ 2026-03-06 11:04:04
● 2026-03-09 11:04:18

●A2606:4700:3034::6815:3b772026-03-09 → 2026-03-09 · 2 obs

○ 2026-03-06 11:04:04
● 2026-03-09 11:04:18

○A2a06:98c1:3120::2026-03-06 → 2026-03-06 · 2 obs

● 2026-03-06 11:04:04
○ 2026-03-09 11:04:18

○A2a06:98c1:3121::2026-03-06 → 2026-03-06 · 2 obs

● 2026-03-06 11:04:04
○ 2026-03-09 11:04:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
usduc.io	woz.ns.cloudflare.com, kristin.ns.cloudflare.com	-

✅ Authoritative Response

Server: 173.245.58.181

NS records: woz.ns.cloudflare.com, kristin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usduc.io (unsigned zone)

⏱️ Timing

Total: 621ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.177.50, 104.21.59.119`
AAAA	2	`2606:4700:3033::ac43:b132, 2606:4700:3034::6815:3b77`
NS	2	`kristin.ns.cloudflare.com, woz.ns.cloudflare.com`
MX	7	`eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10...`
TXT	3	`google-site-verification=ES4iwzwdDACg5mb, v=spf1 include:spf.efwd.registrar-server...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kristin.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

Four IP numbers are pointed to by usduc.io: 2606:4700:3033::ac43:b132, 2606:4700:3034::6815:3b77, 104.21.59.119 and 172.67.177.50.

other host names including przeklej.org, novausa.com, acenoble.us, dsberater.de and notabenoid.ru share IP numbers with usduc.io.

Name Servers

usduc.io is delegated to two name servers kristin.ns.cloudflare.com and woz.ns.cloudflare.com.

usduc.io shares the same name server setup as other domains, for instance webosrs.com, moregoodfoundation.org, systamin.com, breaking-news-arabia.com and bnev.net.

usduc.io at least partially shares name servers with other domains, for instance newlab.com, banglagk.in, alpewa.it, teslads.com and webmastermaksim.ru.

These name servers are commonly used with neil.ns.cloudflare.com, stanley.ns.cloudflare.com and everton.ns.cloudflare.com.

Host names with six IP numbers:

Host name kristin.ns.cloudflare.com points to: 2606:4700:50::adf5:3ab5, 2803:f800:50::6ca2:c0b5, 2a06:98c1:50::ac40:20b5, 108.162.192.181, 172.64.32.181 and 173.245.58.181.

Host name woz.ns.cloudflare.com points to: 2606:4700:58::adf5:3b96, 2803:f800:50::6ca2:c196, 2a06:98c1:50::ac40:2196, 108.162.193.150, 172.64.33.150 and 173.245.59.150.

Mail Servers

usduc.io is handled by seven mail servers: mx1.privateemail.com, mx2.privateemail.com, eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com, eforward4.registrar-servers.com and eforward5.registrar-servers.com.

usduc.io shares some mail servers with other domains, at least partially, for instance sopranosomega.com, boligbuddy.com, saman.dev, aceaudiobooks.com and paeor.com.