🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`algorithmcourse.com`

DNSSEC	⚠️ Not signed
A	216.239.136.99^{🇺🇸 Omnis216.239.136.0/21 Network, LLC}
NS	`ns1.jethostns.com` ⭐
		A	2a0e:acc0:1::cafe:cafe:ca20^{🇨🇿 WEDOS-GLOBAL2a0e:acc0:1::/48}
			PTR	`ns1.jethostns.com`
		A	45.138.106.20^{🇨🇿 WEDOS-GLOBAL45.138.106.0/24 WEDOS Global}
			PTR	`ns1.jethostns.com`
NS	`ns2.jethostns.com`
		A	2a0e:acc0:2::b:1:b20^{🇨🇿 WEDOS-GLOBAL2a0e:acc0:2::/48}
			PTR	`ns2.jethostns.com`
		A	185.8.238.20^{🇨🇿 WEDOS-GLOBAL185.8.238.0/24 WEDOS Global}
			PTR	`ns2.jethostns.com`
NS	`ns3.jethostns.com`
		A	2a0e:acc0:1::cafe:cafe:ca21^{🇨🇿 WEDOS-GLOBAL2a0e:acc0:1::/48}
			PTR	`ns3.jethostns.com`
		A	45.138.106.21^{🇨🇿 WEDOS-GLOBAL45.138.106.0/24 WEDOS Global}
			PTR	`ns3.jethostns.com`
NS	`ns4.jethostns.com`
		A	2a0e:acc0:2::b:1:b21^{🇨🇿 WEDOS-GLOBAL2a0e:acc0:2::/48}
			PTR	`ns4.jethostns.com`
		A	185.8.238.21^{🇨🇿 WEDOS-GLOBAL185.8.238.0/24 WEDOS Global}
			PTR	`ns4.jethostns.com`
SOA	`ns1.jethostns.com`wedos@wedos.com 2026-07-30 #2

`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=1788303695

Same first word

algorithmcourse.com

Similar names

thesurgicalroom.ca

thesurgicalroom.com

hoteuro(0x63616d6769726c)s.com

Previous names

Next names

DNS History

11 records (5 active, 6 former)

●NSns1.jethostns.com2026-09-01 → 2026-09-01 · 3 obs

○ 2017-05-21 03:10:12
● 2026-09-01 21:01:46
● 2026-09-01 23:04:32

○NSns1.omnis.com2015-06-10 → 2017-05-21 · 4 obs

● 2015-06-10 15:04:38
● 2017-05-21 03:10:12
○ 2026-09-01 21:01:46
○ 2026-09-01 23:04:32

●NSns2.jethostns.com2026-09-01 → 2026-09-01 · 3 obs

○ 2017-05-21 03:10:12
● 2026-09-01 21:01:46
● 2026-09-01 23:04:32

○NSns2.omnis.com2015-06-10 → 2017-05-21 · 4 obs

● 2015-06-10 15:04:38
● 2017-05-21 03:10:12
○ 2026-09-01 21:01:46
○ 2026-09-01 23:04:32

●NSns3.jethostns.com2026-09-01 → 2026-09-01 · 3 obs

○ 2017-05-21 03:10:12
● 2026-09-01 21:01:46
● 2026-09-01 23:04:32

○NSns3.omnis.com2015-06-10 → 2017-05-21 · 4 obs

● 2015-06-10 15:04:38
● 2017-05-21 03:10:12
○ 2026-09-01 21:01:46
○ 2026-09-01 23:04:32

●NSns4.jethostns.com2026-09-01 → 2026-09-01 · 3 obs

○ 2017-05-21 03:10:12
● 2026-09-01 21:01:46
● 2026-09-01 23:04:32

○NSprimary.guardeddns.net2015-06-10 → 2017-05-21 · 4 obs

● 2015-06-10 15:04:38
● 2017-05-21 03:10:12
○ 2026-09-01 21:01:46
○ 2026-09-01 23:04:32

○A216.239.128.702015-06-10 → 2015-06-10 · 3 obs

● 2015-06-10 15:04:38
○ 2015-10-23 15:42:12
○ 2026-09-01 23:04:32

○A216.239.130.2202015-10-23 → 2017-05-21 · 5 obs

○ 2015-06-10 15:04:38
● 2015-10-23 15:42:12
● 2017-05-21 03:10:12
○ 2026-09-01 21:01:46
○ 2026-09-01 23:04:32

●A216.239.136.992026-09-01 → 2026-09-01 · 3 obs

○ 2017-05-21 03:10:12
● 2026-09-01 21:01:46
● 2026-09-01 23:04:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net, f.gtld-servers.net...	-
algorithmcourse.com	ns1.jethostns.com, ns2.jethostns.com, ns3.jethostns.com, ns4.jethostns.com	8 records

✅ Authoritative Response

Server:185.8.238.20

NS records: ns1.jethostns.com, ns2.jethostns.com, ns3.jethostns.com, ns4.jethostns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for algorithmcourse.com (unsigned zone)

⏱️ Timing

Total: 706ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.239.136.99`
NS	4	`ns4.jethostns.com, ns1.jethostns.com...`
SOA	1	`ns1.jethostns.com wedos.wedos.com`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns1.jethostns.com, ns1.jethostns.com, ns2.jethostns.com...)

Analysis

IP Addresses

algorithmcourse.com resolves to just one IP address, 216.239.136.99.

Two other host names, along with globeup.com, abowles.com and sussexacademysports.com, also share IP numbers with algorithmcourse.com.

Name Servers

The NS records for algorithmcourse.com point to four name servers: ns1.jethostns.com, ns2.jethostns.com, ns3.jethostns.com and ns4.jethostns.com.

At least some of algorithmcourse.com's name servers are shared with other domains, for example caonlineservices.com, pragdevnotes.com, scsboa.org and two more.

It is common for these name servers to be used in conjunction with the name servers ns1.guardedhost.com, ns1.omnis.com and ns2.guardeddns.net.

Four hostnames, each resolving to a pair of IP addresses: ns1.jethostns.com directs to 45.138.106.20 and 2a0e:acc0:1::cafe:cafe:ca20; ns2.jethostns.com directs to 185.8.238.20 and 2a0e:acc0:2::b:1:b20; ns3.jethostns.com directs to 45.138.106.21 and 2a0e:acc0:1::cafe:cafe:ca21; ns4.jethostns.com directs to 185.8.238.21 and 2a0e:acc0:2::b:1:b21.

algorithmcourse.com - robtex.com