`fdbknowledge.com`

DNSSEC	⚠️ Not signed
A	204.74.99.100^{🇺🇸 MAINT-ID-12008204.74.99.0/24 Neustar}
		PTR	`crs.ultradns.net`
NS	`pdns73.ultradns.com` ⭐
		A	2001:502:f3ff::6d^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns73.ultradns.com`
		A	156.154.64.73^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns73.ultradns.com`
NS	`pdns73.ultradns.biz`
		A	2610:a1:1015::6d^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns73.ultradns.biz`
		A	156.154.66.73^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns73.ultradns.biz`
NS	`pdns73.ultradns.net`
		A	2610:a1:1014::6d^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns73.ultradns.net`
		A	156.154.65.73^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns73.ultradns.net`
NS	`pdns73.ultradns.org`
		A	2001:502:4612::6d^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns73.ultradns.org`
		A	156.154.67.73^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns73.ultradns.org`
SOA	`pdns73.ultradns.com`hostmaster@hearst.com 2015-03-12 #4

`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=1785841602

Same first word

fdbknowledge.com

DNS History

5 records (5 active, 0 former)

●NSpdns73.ultradns.biz2015-07-13 → 2026-08-04 · 2 obs

● 2015-07-13 22:03:34
● 2026-08-04 11:37:00

●NSpdns73.ultradns.com2015-07-13 → 2026-08-04 · 2 obs

● 2015-07-13 22:03:34
● 2026-08-04 11:37:00

●NSpdns73.ultradns.net2015-07-13 → 2026-08-04 · 2 obs

● 2015-07-13 22:03:34
● 2026-08-04 11:37:00

●NSpdns73.ultradns.org2015-07-13 → 2026-08-04 · 2 obs

● 2015-07-13 22:03:34
● 2026-08-04 11:37:00

●A204.74.99.1002015-07-13 → 2026-08-04 · 2 obs

● 2015-07-13 22:03:34
● 2026-08-04 11:37:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
fdbknowledge.com	pdns73.ultradns.net, pdns73.ultradns.com, pdns73.ultradns.org, pdns73.ultradns.biz	2 records

✅ Authoritative Response

Server:156.154.65.73

NS records: pdns73.ultradns.net, pdns73.ultradns.com, pdns73.ultradns.org, pdns73.ultradns.biz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fdbknowledge.com (unsigned zone)

⏱️ Timing

Total: 457ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`204.74.99.100`
NS	4	`pdns73.ultradns.biz, pdns73.ultradns.com...`
SOA	1	`pdns73.ultradns.com hostmaster.hearst.co`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns73.ultradns.com, pdns73.ultradns.com)

Analysis

IP Addresses

fdbknowledge.com resolves to one IP address: 204.74.99.100.

podcastobsession.com, dupont.com.lv, ertan.mindless.com and two other host names share IP numbers with fdbknowledge.com.

Name Servers

The authoritative name servers for fdbknowledge.com are pdns73.ultradns.biz, pdns73.ultradns.com, pdns73.ultradns.net and pdns73.ultradns.org.

There is at least partial name server overlap between fdbknowledge.com and other domains — motortrend.mx, jbo802.com, glitteringdeparture.pro and two more among them.

These name servers frequently co-occur with the name servers pdns73.ultradns.info and pdns73.ultradns.co.uk.

All four hostnames — pdns73.ultradns.biz, pdns73.ultradns.com, pdns73.ultradns.net and pdns73.ultradns.org — resolve to two IP numbers apiece: pdns73.ultradns.biz to 156.154.66.73 and 2610:a1:1015::6d; pdns73.ultradns.com to 156.154.64.73 and 2001:502:f3ff::6d; pdns73.ultradns.net to 156.154.65.73 and 2610:a1:1014::6d; pdns73.ultradns.org to 156.154.67.73 and 2001:502:4612::6d.

fdbknowledge.com - robtex.com