prdo.com - dns.ninja

`prdo.com`

DNSSEC	⚠️ Not signed
NS	`udns1.cscdns.net` ⭐
		A	2001:502:f3ff::201^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`edns1.ultradns.com`
			PTR	`udns1.cscdns.net`
			PTR	`udns1.cscdns.uk`
			PTR	`ns1.webipdns.com.au`
		A	204.74.66.1^{🇺🇸 MAINT-ID-12008204.74.66.0/24 Neustar}
			PTR	`ns1.alba.bank`
			PTR	`edns1.ultradns.com`
			PTR	`udns1.cscdns.net`
			PTR	`udns1.cscdns.uk`
			PTR	`ns1.webipdns.com.au`
NS	`udns2.cscdns.uk`
		A	2001:502:4612::201^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`udns2.cscdns.net`
			PTR	`edns1.ultradns.org`
			PTR	`udns2.cscdns.uk`
			PTR	`ns2.webipdns.com.au`
		A	204.74.111.1^{🇺🇸 MAINT-ID-12008204.74.111.0/24 Neustar}
			PTR	`ns2.alba.bank`
			PTR	`udns2.cscdns.net`
			PTR	`edns1.ultradns.org`
			PTR	`udns2.cscdns.uk`
			PTR	`ns2.webipdns.com.au`
MX	`mx1.hc3950-10.iphmx.com` ⭐
		A	216.71.147.46^{🇺🇸 CISCO-1216.71.147.0/24 170 West Tasman Drive San Jose CA 95134 United States}
		A	216.71.149.25^{🇺🇸 CISCO-1216.71.149.0/24 170 West Tasman Drive San Jose CA 95134 United States}
MX	`mx2.hc3950-10.iphmx.com` ⭐
		A	216.71.147.46^{🇺🇸 CISCO-1216.71.147.0/24 170 West Tasman Drive San Jose CA 95134 United States}
		A	216.71.149.25^{🇺🇸 CISCO-1216.71.149.0/24 170 West Tasman Drive San Jose CA 95134 United States}
MX	`prdo-com.mail.protection.outlook.com`⁽⁵⁾
		A	2a01:111:f403:c922::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr03cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:c92c::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-dm6pr05cu00404.inbound.protection.outlook.com`
		A	2a01:111:f403:c931::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f902::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-mn2pr02cu00202.inbound.protection.outlook.com`
		A	52.101.9.11^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl2pr04cu00103.inbound.protection.outlook.com`
		A	52.101.9.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl2pr02cu00400.inbound.protection.outlook.com`
		A	52.101.10.10^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr05cu00102.inbound.protection.outlook.com`
		A	52.101.11.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr0501cu00205.inbound.protection.outlook.com`
TXT	`MS=ms64409534`
SOA	`udns1.cscdns.net`hostmaster@cscdns.net 2019-12-19 #18

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1780565489

Same first word

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DNS History

24 records (5 active, 19 former)

○NSns1.fastpark.net2015-07-11 → 2018-02-16 · 5 obs

○ 2008-03-19 23:44:56
● 2015-07-11 07:24:00
● 2018-02-16 17:59:24
○ 2021-08-31 04:29:20
○ 2026-06-04 09:50:06

○NSns1.mydomain.com2008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○NSns2.fastpark.net2015-07-11 → 2018-02-16 · 5 obs

○ 2008-03-19 23:44:56
● 2015-07-11 07:24:00
● 2018-02-16 17:59:24
○ 2021-08-31 04:29:20
○ 2026-06-04 09:50:06

○NSns2.mydomain.com2008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○NSns3.mydomain.com2008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

●NSudns1.cscdns.net2021-08-31 → 2026-06-04 · 3 obs

○ 2018-02-16 17:59:24
● 2021-08-31 04:29:20
● 2026-06-04 09:50:06

●NSudns2.cscdns.uk2021-08-31 → 2026-06-04 · 3 obs

○ 2018-02-16 17:59:24
● 2021-08-31 04:29:20
● 2026-06-04 09:50:06

○MXm1.dnsix.com2008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○MXmail.h-email.net2015-12-01 → 2018-02-16 · 5 obs

○ 2015-07-11 07:24:00
● 2015-12-01 20:33:42
● 2018-02-16 17:59:24
○ 2021-08-31 04:29:20
○ 2026-06-04 09:50:06

●MXmx1.hc3950-10.iphmx.com2021-08-31 → 2026-06-04 · 3 obs

○ 2018-02-16 17:59:24
● 2021-08-31 04:29:20
● 2026-06-04 09:50:06

●MXmx2.hc3950-10.iphmx.com2021-08-31 → 2026-06-04 · 3 obs

○ 2018-02-16 17:59:24
● 2021-08-31 04:29:20
● 2026-06-04 09:50:06

●MXprdo-com.mail.protection.outlook.com2021-08-31 → 2026-06-04 · 3 obs

○ 2018-02-16 17:59:24
● 2021-08-31 04:29:20
● 2026-06-04 09:50:06

○A185.53.177.82015-12-01 → 2016-06-16 · 5 obs

○ 2015-07-11 07:24:00
● 2015-12-01 20:33:42
● 2016-06-16 13:11:08
○ 2016-12-09 10:09:00
○ 2026-06-04 09:50:06

○A185.53.178.82016-12-09 → 2018-02-16 · 5 obs

○ 2016-06-16 13:11:08
● 2016-12-09 10:09:00
● 2018-02-16 17:59:24
○ 2021-08-31 04:29:20
○ 2026-06-04 09:50:06

○A216.8.179.252015-07-11 → 2015-07-11 · 4 obs

○ 2008-03-19 23:44:56
● 2015-07-11 07:24:00
○ 2015-12-01 20:33:42
○ 2026-06-04 09:50:06

○A54.72.9.512018-02-16 → 2018-02-16 · 4 obs

○ 2016-12-09 10:09:00
● 2018-02-16 17:59:24
○ 2026-02-23 12:48:48
○ 2026-06-04 09:50:06

○A66.150.161.1332008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○A66.150.161.1362008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○A66.150.161.1402008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○A66.150.161.1412008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○A69.25.27.1702008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○A69.25.27.1712008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○A69.25.27.1722008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

○A69.25.27.1732008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 23:44:56
○ 2015-07-11 07:24:00
○ 2026-06-04 09:50:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
prdo.com	udns1.cscdns.net, udns2.cscdns.uk	-

✅ Authoritative Response

Server:204.74.66.1

NS records: udns1.cscdns.net, udns2.cscdns.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for prdo.com (unsigned zone)

⏱️ Timing

Total: 866ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`udns1.cscdns.net, udns2.cscdns.uk`
MX	3	`mx1.hc3950-10.iphmx.com (pri: 1), mx2.hc3950-10.iphmx.com (pri: 1)...`
TXT	1	`MS=ms64409534`
SOA	1	`udns1.cscdns.net hostmaster.cscdns.net`

Analysis

Name Servers

Two name servers handle the delegation for prdo.com: udns1.cscdns.net and udns2.cscdns.uk.

prdo.com shares its NS records with other domains, for example kraft.ca, chociehotels.com, unisourcefreight.com and two others.

prdo.com partially shares its NS delegation with several other domains, including manulifesurveys.com, voyagemanuvie.com, mpphub.com and two others.

These name servers are regularly seen alongside ns0005.secondary.cloudflare.com and ns0182.secondary.cloudflare.com as name servers.

udns1.cscdns.net and udns2.cscdns.uk both carry two IP addresses. The A records for udns1.cscdns.net are 204.74.66.1 and 2001:502:f3ff::201; the A records for udns2.cscdns.uk are 204.74.111.1 and 2001:502:4612::201.

Mail Servers

prdo.com uses three mail servers — mx1.hc3950-10.iphmx.com, mx2.hc3950-10.iphmx.com and prdo-com.mail.protection.outlook.com.

There is at least a partial MX overlap between prdo.com and other domains, including ctuonline.edu, careered.com, aiuonline.edu and two others.

These mail servers often co-occur with the mail servers perdoceoed-com.mail.protection.outlook.com.

DNS names with 8 IP addresses:

The hostname prdo-com.mail.protection.outlook.com resolves to 52.101.9.11, 52.101.9.24 and 52.101.10.10 — and five other IP addresses beyond those.

Host names that have two IP addresses:

mx1.hc3950-10.iphmx.com resolves to two addresses: 216.71.147.46 and 216.71.149.25.

mx2.hc3950-10.iphmx.com resolves to two addresses: 216.71.147.46 and 216.71.149.25.

mx1.hc3950-10.iphmx.com along with mx2.hc3950-10.iphmx.com each resolve to 216.71.147.46 IP addresses.

mx1.hc3950-10.iphmx.com along with mx2.hc3950-10.iphmx.com each resolve to 216.71.149.25 IP addresses.