dcu.com - dns.ninja

`dcu.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:d59a^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:25d9^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.217^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.213.154^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`edna.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a6d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`edna.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`edna.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`edna.ns.cloudflare.com`
		A	108.162.192.109^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.32.109^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.58.109^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`hans.ns.cloudflare.com`
		A	2606:4700:58::adf5:3baf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1af^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hans.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21af^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hans.ns.cloudflare.com`
		A	108.162.193.175^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	172.64.33.175^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	173.245.59.175^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
MX	`dcu-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c931::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f802::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01403.inbound.protection.outlook.com`
		A	2a01:111:f403:f901::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl2pr02cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:f908::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn1pr04cu00101.inbound.protection.outlook.com`
		A	40.93.192.4^{🇺🇸 Microsoft40.80.0.0/12}
			PTR	`mail-dm2pr04cu00404.inbound.protection.outlook.com`
		A	52.101.9.0^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl2pr02cu00100.inbound.protection.outlook.com`
		A	52.101.9.14^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl0pr03cu00206.inbound.protection.outlook.com`
		A	52.101.11.17^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
TXT	`D0iosKToPxNHW84LJNSCV/hElYdRaIjBlsT4zWPoPRi7WpEju023AfUHfO6l/my09ez+f65utXsdM...`
TXT	`v=spf1 include:spf.protection.outlook.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.37.217, 172.67.213.154
		IPv6 hints	2606:4700:3030::ac43:d59a, 2606:4700:3031::6815:25d9
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=96, name=cloudflare-ech.com
SOA	`edna.ns.cloudflare.com`dns@cloudflare.com serial=2405834299

`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=1782556605

WOT: SAFE (67/100)

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DNS History

25 records (7 active, 18 former)

○NSa1.verisigndns.com2015-08-22 → 2019-07-14 · 4 obs

● 2015-08-22 06:26:12
● 2019-07-14 13:58:38
○ 2019-09-11 18:12:18
○ 2026-06-27 11:05:48

○NSa2.verisigndns.com2015-08-22 → 2019-07-14 · 4 obs

● 2015-08-22 06:26:12
● 2019-07-14 13:58:38
○ 2019-09-11 18:12:18
○ 2026-06-27 11:05:48

○NSa3.verisigndns.com2015-08-22 → 2019-07-14 · 4 obs

● 2015-08-22 06:26:12
● 2019-07-14 13:58:38
○ 2019-09-11 18:12:18
○ 2026-06-27 11:05:48

●NSedna.ns.cloudflare.com2019-09-11 → 2026-06-27 · 3 obs

○ 2019-07-14 13:58:38
● 2019-09-11 18:12:18
● 2026-06-27 11:05:48

●NShans.ns.cloudflare.com2019-09-11 → 2026-06-27 · 3 obs

○ 2019-07-14 13:58:38
● 2019-09-11 18:12:18
● 2026-06-27 11:05:48

●MXdcu-com.mail.protection.outlook.com2026-02-20 → 2026-06-27 · 3 obs

○ 2020-12-03 19:51:20
● 2026-02-20 06:04:02
● 2026-06-27 11:05:48

○MXhq-mail-01.dcunet.org2015-08-22 → 2020-12-03 · 4 obs

● 2015-08-22 06:26:12
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

○MXmail.uu.net2015-08-22 → 2020-12-03 · 4 obs

● 2015-08-22 06:26:12
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

○MXmail1.dcu.org2015-08-22 → 2019-07-14 · 4 obs

● 2015-08-22 06:26:12
● 2019-07-14 13:58:38
○ 2019-09-11 18:12:18
○ 2026-06-27 11:05:48

○MXmail3.dcu.org2015-08-22 → 2019-07-14 · 4 obs

● 2015-08-22 06:26:12
● 2019-07-14 13:58:38
○ 2019-09-11 18:12:18
○ 2026-06-27 11:05:48

○MXoc-mail-01.dcunet.org2015-08-22 → 2020-12-03 · 4 obs

● 2015-08-22 06:26:12
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

○MXoc-mail-02.dcunet.org2015-08-22 → 2020-12-03 · 4 obs

● 2015-08-22 06:26:12
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

○MXoc-mail-03.dcunet.org2015-08-22 → 2020-12-03 · 4 obs

● 2015-08-22 06:26:12
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

○A104.18.40.492020-03-22 → 2020-12-03 · 5 obs

○ 2019-11-08 01:31:22
● 2020-03-22 05:43:48
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

○A104.18.41.492020-03-22 → 2020-12-03 · 5 obs

○ 2019-11-08 01:31:22
● 2020-03-22 05:43:48
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

●A104.21.37.2172026-02-20 → 2026-06-27 · 3 obs

○ 2020-12-03 19:51:20
● 2026-02-20 06:04:02
● 2026-06-27 11:05:48

●A172.67.213.1542020-12-03 → 2026-06-27 · 3 obs

○ 2020-03-22 05:43:48
● 2020-12-03 19:51:20
● 2026-06-27 11:05:48

○A216.87.148.1142017-01-26 → 2019-11-08 · 5 obs

○ 2016-11-22 01:27:46
● 2017-01-26 11:55:36
● 2019-11-08 01:31:22
○ 2020-03-22 05:43:48
○ 2026-06-27 11:05:48

○A2606:4700:3030::6815:25d92026-02-20 → 2026-02-20 · 4 obs

○ 2020-12-03 19:51:20
● 2026-02-20 06:04:02
○ 2026-06-21 11:16:22
○ 2026-06-27 11:05:48

●A2606:4700:3030::ac43:d59a2026-06-21 → 2026-06-27 · 3 obs

○ 2026-02-20 06:04:02
● 2026-06-21 11:16:22
● 2026-06-27 11:05:48

○A2606:4700:3031::6812:29312020-03-22 → 2020-12-03 · 5 obs

○ 2019-11-08 01:31:22
● 2020-03-22 05:43:48
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

●A2606:4700:3031::6815:25d92026-06-21 → 2026-06-27 · 3 obs

○ 2026-02-20 06:04:02
● 2026-06-21 11:16:22
● 2026-06-27 11:05:48

○A2606:4700:3032::6812:28312020-03-22 → 2020-12-03 · 5 obs

○ 2019-11-08 01:31:22
● 2020-03-22 05:43:48
● 2020-12-03 19:51:20
○ 2026-02-20 06:04:02
○ 2026-06-27 11:05:48

○A2606:4700:3037::ac43:d59a2020-12-03 → 2020-12-03 · 4 obs

○ 2020-03-22 05:43:48
● 2020-12-03 19:51:20
○ 2026-06-21 11:16:22
○ 2026-06-27 11:05:48

○A69.58.186.1142015-08-22 → 2016-11-22 · 4 obs

● 2015-08-22 06:26:12
● 2016-11-22 01:27:46
○ 2017-01-26 11:55:36
○ 2026-06-27 11:05:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
dcu.com	edna.ns.cloudflare.com, hans.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.109

NS records: edna.ns.cloudflare.com, hans.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dcu.com (unsigned zone)

⏱️ Timing

Total: 265ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.37.217, 172.67.213.154`
AAAA	2	`2606:4700:3031::6815:25d9, 2606:4700:3030::ac43:d59a`
NS	2	`edna.ns.cloudflare.com, hans.ns.cloudflare.com`
MX	1	`dcu-com.mail.protection.outlook.com (pri`
TXT	2	`D0iosKToPxNHW84LJNSCV/hElYdRaIjBlsT4zWPo, v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`edna.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (edna.ns.cloudflare.com, edna.ns.cloudflare.com, edna.ns.cloudflare.com...)

Analysis

IP Addresses

dcu.com points to the four IP addresses 104.21.37.217, 172.67.213.154, 2606:4700:3030::ac43:d59a and 2606:4700:3031::6815:25d9.

www.kasers.link, acrcerchang.com, amb168v2.vip plus two other host names have IP numbers in common with dcu.com.

Name Servers

The NS records for dcu.com delegate to edna.ns.cloudflare.com and hans.ns.cloudflare.com.

The name server configuration of dcu.com is shared with other domains, for instance help-for-work-d31.pages.dev, dcuanswers.net, planeta-design.com and two others.

The name servers of dcu.com overlap at least partially with those of other domains — among them designdxf.com, edififo.top, euforya.net and two more.

The name servers brenda.ns.cloudflare.com, tom.ns.cloudflare.com and finley.ns.cloudflare.com are commonly seen alongside these name servers.

Hosts with 6 IP addresses each:

edna.ns.cloudflare.com maps to 108.162.192.109, 172.64.32.109, 173.245.58.109 and 3 additional IP addresses.

hans.ns.cloudflare.com maps to 108.162.193.175, 172.64.33.175, 173.245.59.175 and 3 additional IP addresses.

Mail Servers

dcu.com uses one mail server — dcu-com.mail.protection.outlook.com.

dcu-com.mail.protection.outlook.com has 8 IP addresses: 40.93.192.4, 52.101.9.0, 52.101.9.14 plus 5 more.