`herculexseminar.com`

DNSSEC	⚠️ Not signed
NS	`pdns216.ultradns.com` ⭐
		A	2001:502:f3ff::fc^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns216.ultradns.com`
		A	156.154.64.216^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns216.ultradns.com`
NS	`pdns216.ultradns.biz`
		A	2610:a1:1015::fc^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns216.ultradns.biz`
		A	156.154.66.216^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns216.ultradns.biz`
NS	`pdns216.ultradns.net`
		A	2610:a1:1014::fc^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns216.ultradns.net`
		A	156.154.65.216^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns216.ultradns.net`
NS	`pdns216.ultradns.org`
		A	2001:502:4612::fc^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns216.ultradns.org`
		A	156.154.67.216^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns216.ultradns.org`
TXT	`v=spf1 -all`
SOA	`pdns216.ultradns.com`hostmaster@corteva.com 2024-01-10 #13

`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=1783722537

Same first word

herculexseminar.com

DNS History

9 records (4 active, 5 former)

○NSmantdnsi1.dow.com2015-06-06 → 2017-05-24 · 5 obs

○ 2008-03-15 03:06:12
● 2015-06-06 03:00:44
● 2017-05-24 08:22:26
○ 2026-07-03 11:35:50
○ 2026-07-10 22:37:26

●NSpdns216.ultradns.biz2026-07-03 → 2026-07-10 · 3 obs

○ 2017-05-24 08:22:26
● 2026-07-03 11:35:50
● 2026-07-10 22:37:26

●NSpdns216.ultradns.com2026-07-03 → 2026-07-10 · 3 obs

○ 2017-05-24 08:22:26
● 2026-07-03 11:35:50
● 2026-07-10 22:37:26

●NSpdns216.ultradns.net2026-07-03 → 2026-07-10 · 3 obs

○ 2017-05-24 08:22:26
● 2026-07-03 11:35:50
● 2026-07-10 22:37:26

●NSpdns216.ultradns.org2026-07-03 → 2026-07-10 · 3 obs

○ 2017-05-24 08:22:26
● 2026-07-03 11:35:50
● 2026-07-10 22:37:26

○NStnntdnsi1.dow.com2015-06-06 → 2017-05-24 · 5 obs

○ 2008-03-15 03:06:12
● 2015-06-06 03:00:44
● 2017-05-24 08:22:26
○ 2026-07-03 11:35:50
○ 2026-07-10 22:37:26

○NStxntdnsi1.dow.com2015-06-06 → 2017-05-24 · 5 obs

○ 2008-03-15 03:06:12
● 2015-06-06 03:00:44
● 2017-05-24 08:22:26
○ 2026-07-03 11:35:50
○ 2026-07-10 22:37:26

○A129.33.46.2442008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 03:06:12
○ 2015-06-06 03:00:44
○ 2026-07-10 22:37:26

○A216.99.82.842015-06-06 → 2017-05-24 · 5 obs

○ 2008-03-15 03:06:12
● 2015-06-06 03:00:44
● 2017-05-24 08:22:26
○ 2026-07-03 11:35:50
○ 2026-07-10 22:37:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net, m.gtld-servers.net...	-
herculexseminar.com	pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org	2 records

✅ Authoritative Response

Server:156.154.66.216

NS records: pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for herculexseminar.com (unsigned zone)

⏱️ Timing

Total: 423ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`pdns216.ultradns.biz, pdns216.ultradns.com...`
TXT	1	`v=spf1 -all`
SOA	1	`pdns216.ultradns.com hostmaster.corteva.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns216.ultradns.com, pdns216.ultradns.com)

Analysis

Name Servers

The domain herculexseminar.com is delegated to these four name servers: pdns216.ultradns.biz, pdns216.ultradns.com, pdns216.ultradns.net and pdns216.ultradns.org.

herculexseminar.com shares at least some of its name servers with other domains, including corteva.group, corteva.co.uk, corteva.us and two others.

These name servers are frequently seen alongside pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net and 3 other name servers.

The host names pdns216.ultradns.biz, pdns216.ultradns.com, pdns216.ultradns.net and pdns216.ultradns.org each resolve to two IP addresses: pdns216.ultradns.biz resolves to 156.154.66.216 and 2610:a1:1015::fc; pdns216.ultradns.com resolves to 156.154.64.216 and 2001:502:f3ff::fc; pdns216.ultradns.net resolves to 156.154.65.216 and 2610:a1:1014::fc; pdns216.ultradns.org resolves to 156.154.67.216 and 2001:502:4612::fc.

herculexseminar.com - robtex.com