`ucdu.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:9061^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:4765^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.71.101^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.144.97^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gerald.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3ba8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerald.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1a8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gerald.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21a8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gerald.ns.cloudflare.com`
		A	108.162.193.168^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerald.ns.cloudflare.com`
		A	172.64.33.168^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerald.ns.cloudflare.com`
		A	173.245.59.168^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerald.ns.cloudflare.com`
NS	`stevie.ns.cloudflare.com`
		A	2606:4700:50::a29f:266a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`stevie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c26a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`stevie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:226a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`stevie.ns.cloudflare.com`
		A	108.162.194.106^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`stevie.ns.cloudflare.com`
		A	162.159.38.106^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`stevie.ns.cloudflare.com`
		A	172.64.34.106^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`stevie.ns.cloudflare.com`
TXT	`google-site-verification=wAccV7R2vG1yCA03vtGDNuUKrh2_7AnCQasqDBBSbtY`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.71.101, 172.67.144.97
		IPv6	2606:4700:3035::ac43:9061, 2606:4700:3037::6815:4765
SOA	`gerald.ns.cloudflare.com`dns@cloudflare.com serial=2395746299

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1773551953

Subdomains

www.ucdu.org

Same first word

ucdu.org

Similar names

dcuu.cn

uucd.com

cduu.net

ducu.com

duuc.nl

uudc.cn

uucd.org

ducu.cn

ducu.ro

cudu.de

uudc.com.cn

cudu.eu

cudu.gr

cuud.net

ducu.de

duuc.cn

udcu.cc

duuc.com

uucd.ca

DNS History

16 records (6 active, 10 former)

●NSgerald.ns.cloudflare.com2026-03-22 → 2026-03-24 · 3 obs

○ 2020-01-31 02:03:20
● 2026-03-22 08:53:18
● 2026-03-24 02:30:16

○NSns1045.ui-dns.de2020-01-31 → 2020-01-31 · 4 obs

○ 2017-03-18 19:06:02
● 2020-01-31 02:03:20
○ 2026-03-22 08:53:18
○ 2026-03-24 02:30:16

○NSns1069.ui-dns.com2020-01-31 → 2020-01-31 · 4 obs

○ 2017-03-18 19:06:02
● 2020-01-31 02:03:20
○ 2026-03-22 08:53:18
○ 2026-03-24 02:30:16

○NSns1088.ui-dns.biz2020-01-31 → 2020-01-31 · 4 obs

○ 2017-03-18 19:06:02
● 2020-01-31 02:03:20
○ 2026-03-22 08:53:18
○ 2026-03-24 02:30:16

○NSns1106.ui-dns.org2020-01-31 → 2020-01-31 · 4 obs

○ 2017-03-18 19:06:02
● 2020-01-31 02:03:20
○ 2026-03-22 08:53:18
○ 2026-03-24 02:30:16

○NSns29.1and1.com2015-08-05 → 2017-03-18 · 4 obs

● 2015-08-05 06:43:16
● 2017-03-18 19:06:02
○ 2020-01-31 02:03:20
○ 2026-03-24 02:30:16

○NSns30.1and1.com2015-08-05 → 2017-03-18 · 4 obs

● 2015-08-05 06:43:16
● 2017-03-18 19:06:02
○ 2020-01-31 02:03:20
○ 2026-03-24 02:30:16

●NSstevie.ns.cloudflare.com2026-03-22 → 2026-03-24 · 3 obs

○ 2020-01-31 02:03:20
● 2026-03-22 08:53:18
● 2026-03-24 02:30:16

○MXmx00.1and1.com2015-08-05 → 2020-01-31 · 4 obs

● 2015-08-05 06:43:16
● 2020-01-31 02:03:20
○ 2026-03-22 08:53:18
○ 2026-03-24 02:30:16

○MXmx01.1and1.com2015-08-05 → 2020-01-31 · 4 obs

● 2015-08-05 06:43:16
● 2020-01-31 02:03:20
○ 2026-03-22 08:53:18
○ 2026-03-24 02:30:16

●A104.21.71.1012026-03-22 → 2026-03-24 · 3 obs

○ 2020-01-31 02:03:20
● 2026-03-22 08:53:18
● 2026-03-24 02:30:16

●A172.67.144.972026-03-22 → 2026-03-24 · 3 obs

○ 2020-01-31 02:03:20
● 2026-03-22 08:53:18
● 2026-03-24 02:30:16

●A2606:4700:3035::ac43:90612026-03-22 → 2026-03-24 · 3 obs

○ 2020-01-31 02:03:20
● 2026-03-22 08:53:18
● 2026-03-24 02:30:16

●A2606:4700:3037::6815:47652026-03-22 → 2026-03-24 · 3 obs

○ 2020-01-31 02:03:20
● 2026-03-22 08:53:18
● 2026-03-24 02:30:16

○A74.208.20.1602015-08-05 → 2017-03-18 · 4 obs

● 2015-08-05 06:43:16
● 2017-03-18 19:06:02
○ 2020-01-31 02:03:20
○ 2026-03-24 02:30:16

○A74.208.236.2072020-01-31 → 2020-01-31 · 4 obs

○ 2017-03-18 19:06:02
● 2020-01-31 02:03:20
○ 2026-03-22 08:53:18
○ 2026-03-24 02:30:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org	-
ucdu.org	stevie.ns.cloudflare.com, gerald.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.168

NS records: stevie.ns.cloudflare.com, gerald.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ucdu.org (unsigned zone)

⏱️ Timing

Total: 370ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.71.101, 172.67.144.97`
AAAA	2	`2606:4700:3035::ac43:9061, 2606:4700:3037::6815:4765`
NS	2	`gerald.ns.cloudflare.com, stevie.ns.cloudflare.com`
TXT	1	`google-site-verification=wAccV7R2vG1yCA0`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`gerald.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

ucdu.org is the parent of www.ucdu.org.

IP Addresses

Four IP numbers are pointed to by ucdu.org: 2606:4700:3035::ac43:9061, 2606:4700:3037::6815:4765, 104.21.71.101 and 172.67.144.97.

other host names including com.clanhop.com, betuwe.net, ns2.bc-aquamarine.ru, lastwow.com and ccsou.cn share IP numbers with ucdu.org.

Name Servers

ucdu.org is delegated to two name servers gerald.ns.cloudflare.com and stevie.ns.cloudflare.com.

ucdu.org shares the same name server setup as other domains, for instance agrentalslubbock.com, tadwen.net, lesbiansugarmama.net, joelwallis.com and nationalbutterflycenter.org.

ucdu.org at least partially shares name servers with other domains, for instance pericementoclasia.cyou, akd520.com, sepides.es, aquapool54.ru and hindi(0x736578)(0x78766964656f73).sbs.

These name servers are commonly used with kaiser.ns.cloudflare.com, ian.ns.cloudflare.com and sharon.ns.cloudflare.com.

Host names with six IP numbers:

Host name gerald.ns.cloudflare.com points to: 2606:4700:58::adf5:3ba8, 2803:f800:50::6ca2:c1a8, 2a06:98c1:50::ac40:21a8, 108.162.193.168, 172.64.33.168 and 173.245.59.168.

Host name stevie.ns.cloudflare.com points to: 2606:4700:50::a29f:266a, 2803:f800:50::6ca2:c26a, 2a06:98c1:50::ac40:226a, 108.162.194.106, 162.159.38.106 and 172.64.34.106.

ucdu.org - robtex.com

ucdu.org

org

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

`ucdu.org`

`org`