cssud.org - dns.ninja

`cssud.org`

DNSSEC	⚠️ Not signed
A	67.221.138.65^{🇺🇸 PEOPLES-167.221.128.0/20 Peoples Communication Inc.}
		PTR	`mail.cssud.org`
NS	`ns51.worldnic.com` ⭐
		A	162.159.26.165^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns52.worldnic.com`
		A	162.159.27.8^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`d361018a.ess.barracudanetworks.com` ⭐
		A	209.222.82.252^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.253^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.255^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
MX	`d361018b.ess.barracudanetworks.com`⁽²⁰⁾
		A	209.222.82.252^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.253^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.255^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
TXT	`v=spf1 a mx include:spf.ess.barracudanetworks.com -all`
SOA	`NS51.WORLDNIC.COM`namehost@WORLDNIC.COM serial=126050611

`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=1783881774

Subdomains

mail.cssud.org

Same first word

cssud.org

cssud.com

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usdsc.com

cdsus.biz

cdsus.net

scusd.org

uscsd.net

dcsus.com

cdsus.coop

csdus.com

uscsd.info

ducss.ie

sdcus.com

scusd.edu

dussc.co.uk

cussd.com

usdsc.org

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uscsd.k12.pa.us

udscs.com

cduss.cn

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cduss.com

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scusd.com

csusd.com

sdusc.org

cussd.mobi

uscds.net

cussd.net

dcssu.ir

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sdscu.cn

scuds.org

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uscds.org

DNS History

9 records (5 active, 4 former)

●NSns51.worldnic.com2015-08-19 → 2026-07-12 · 2 obs

● 2015-08-19 13:16:38
● 2026-07-12 19:07:58

●NSns52.worldnic.com2015-08-19 → 2026-07-12 · 2 obs

● 2015-08-19 13:16:38
● 2026-07-12 19:07:58

●MXd361018a.ess.barracudanetworks.com2026-05-27 → 2026-07-12 · 3 obs

○ 2026-03-23 19:39:46
● 2026-05-27 00:43:28
● 2026-07-12 19:07:58

●MXd361018b.ess.barracudanetworks.com2026-05-27 → 2026-07-12 · 3 obs

○ 2026-03-23 19:39:46
● 2026-05-27 00:43:28
● 2026-07-12 19:07:58

○MXmail.cssud.org2015-08-19 → 2017-03-16 · 4 obs

● 2015-08-19 13:16:38
● 2017-03-16 08:32:48
○ 2026-03-07 19:58:02
○ 2026-07-12 19:07:58

○MXmail.etxmail.com2026-03-07 → 2026-03-23 · 5 obs

○ 2017-03-16 08:32:48
● 2026-03-07 19:58:02
● 2026-03-23 19:39:46
○ 2026-05-27 00:43:28
○ 2026-07-12 19:07:58

○MXmail2.etxmail.com2026-03-07 → 2026-03-23 · 5 obs

○ 2017-03-16 08:32:48
● 2026-03-07 19:58:02
● 2026-03-23 19:39:46
○ 2026-05-27 00:43:28
○ 2026-07-12 19:07:58

○A173.219.12.962015-08-19 → 2017-03-16 · 4 obs

● 2015-08-19 13:16:38
● 2017-03-16 08:32:48
○ 2026-03-07 19:58:02
○ 2026-07-12 19:07:58

●A67.221.138.652026-03-07 → 2026-07-12 · 3 obs

○ 2017-03-16 08:32:48
● 2026-03-07 19:58:02
● 2026-07-12 19:07:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
cssud.org	ns51.worldnic.com, ns52.worldnic.com	-

✅ Authoritative Response

Server:162.159.27.8

NS records: ns51.worldnic.com, ns52.worldnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cssud.org (unsigned zone)

⏱️ Timing

Total: 647ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`67.221.138.65`
NS	2	`ns51.worldnic.com, ns52.worldnic.com`
MX	2	`d361018a.ess.barracudanetworks.com (pri:, d361018b.ess.barracudanetworks.com (pri:`
TXT	1	`v=spf1 a mx include:spf.ess.barracudanet`
SOA	1	`NS51.WORLDNIC.COM namehost.WORLDNIC.COM`

Analysis

Hierarchy

The domain mail.cssud.org falls under the parent cssud.org.

IP Addresses

cssud.org resolves to just one IP address, 67.221.138.65.

There are other host names — mail.cssud.org among them — that share IP numbers with cssud.org.

Name Servers

DNS delegation for cssud.org points to two name servers: ns51.worldnic.com and ns52.worldnic.com.

cssud.org shares its NS records with other domains, for example temmc.com, finneganchevybuickgmc.com, mtplearning.com and two others.

Each of ns51.worldnic.com and ns52.worldnic.com has one IP address: ns51.worldnic.com uses 162.159.26.165 and ns52.worldnic.com uses 162.159.27.8.

Mail Servers

cssud.org is served by two mail servers, d361018a.ess.barracudanetworks.com and d361018b.ess.barracudanetworks.com.

d361018a.ess.barracudanetworks.com resolves to 209.222.82.252, 209.222.82.253 and 209.222.82.255; d361018b.ess.barracudanetworks.com resolves to those same three IP addresses.

Host names pointing to 209.222.82.252 IP addresses: d361018a.ess.barracudanetworks.com and d361018b.ess.barracudanetworks.com.

Host names pointing to 209.222.82.253 IP addresses: d361018a.ess.barracudanetworks.com and d361018b.ess.barracudanetworks.com.

Host names pointing to 209.222.82.255 IP addresses: d361018a.ess.barracudanetworks.com and d361018b.ess.barracudanetworks.com.