`hadoopschool.com`

DNSSEC	⚠️ Not signed
NS	`dns1.p01.nsone.net` ⭐
		A	2620:4d:4000:6259:7:1:0:1^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns1.p01.nsone.net`
NS	`dns2.p01.nsone.net`
		A	2a00:edc0:6259:7:1::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p01.nsone.net`
		A	198.51.45.1^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns2.p01.nsone.net`
NS	`dns3.p01.nsone.net`
		A	2620:4d:4000:6259:7:1:0:3^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns3.p01.nsone.net`
NS	`dns4.p01.nsone.net`
		A	2a00:edc0:6259:7:1::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p01.nsone.net`
		A	198.51.45.65^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns4.p01.nsone.net`
SOA	`dns1.p01.nsone.net`hostmaster@nsone.net serial=1760630553

`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=1774564232

Same first word

hadoopschool.com

DNS History

9 records (4 active, 5 former)

●NSdns1.p01.nsone.net2026-03-19 → 2026-03-26 · 3 obs

○ 2017-09-03 19:25:40
● 2026-03-19 18:22:32
● 2026-03-26 22:46:20

●NSdns2.p01.nsone.net2026-03-19 → 2026-03-26 · 3 obs

○ 2017-09-03 19:25:40
● 2026-03-19 18:22:32
● 2026-03-26 22:46:20

●NSdns3.p01.nsone.net2026-03-19 → 2026-03-26 · 3 obs

○ 2017-09-03 19:25:40
● 2026-03-19 18:22:32
● 2026-03-26 22:46:20

●NSdns4.p01.nsone.net2026-03-19 → 2026-03-26 · 3 obs

○ 2017-09-03 19:25:40
● 2026-03-19 18:22:32
● 2026-03-26 22:46:20

○NSns1.p29.dynect.net2015-07-24 → 2017-09-03 · 4 obs

● 2015-07-24 08:25:44
● 2017-09-03 19:25:40
○ 2026-03-19 18:22:32
○ 2026-03-26 22:46:20

○NSns2.p29.dynect.net2015-07-24 → 2017-09-03 · 4 obs

● 2015-07-24 08:25:44
● 2017-09-03 19:25:40
○ 2026-03-19 18:22:32
○ 2026-03-26 22:46:20

○NSns3.p29.dynect.net2015-07-24 → 2017-09-03 · 4 obs

● 2015-07-24 08:25:44
● 2017-09-03 19:25:40
○ 2026-03-19 18:22:32
○ 2026-03-26 22:46:20

○NSns4.p29.dynect.net2015-07-24 → 2017-09-03 · 4 obs

● 2015-07-24 08:25:44
● 2017-09-03 19:25:40
○ 2026-03-19 18:22:32
○ 2026-03-26 22:46:20

○A174.129.43.2192015-07-24 → 2017-09-03 · 4 obs

● 2015-07-24 08:25:44
● 2017-09-03 19:25:40
○ 2026-03-19 18:22:32
○ 2026-03-26 22:46:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
hadoopschool.com	dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net	-

✅ Authoritative Response

Server:198.51.45.1

NS records: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hadoopschool.com (unsigned zone)

⏱️ Timing

Total: 367ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`dns1.p01.nsone.net, dns2.p01.nsone.net...`
SOA	1	`dns1.p01.nsone.net hostmaster.nsone.net`

Analysis

Name Servers

hadoopschool.com delegates to four name servers: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net.

hadoopschool.com at least partially shares name servers with other domains, for instance natilon.com, andresfigueira.com, bird(0x6675636b).com, zrsk.de and jfrench-consulting.com.

these name servers are commonly used with ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com, ns04.squarespacedns.com, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.com, dns4.p03.nsone.net and dns1.p02.nsone.net.

Host names with two IP numbers: dns1.p01.nsone.net points to 2620:4d:4000:6259:7:1:0:1 and 198.51.44.1; dns2.p01.nsone.net points to 2a00:edc0:6259:7:1::2 and 198.51.45.1; dns3.p01.nsone.net points to 2620:4d:4000:6259:7:1:0:3 and 198.51.44.65; dns4.p01.nsone.net points to 2a00:edc0:6259:7:1::4 and 198.51.45.65.

hadoopschool.com - robtex.com