`ameritradeholding.com`

DNSSEC	⚠️ Not signed
A	127.0.0.1
NS	`ns1.markmonitor.com` ⭐
		A	2620:10a:80a8::1^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.1^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns2.markmonitor.com`
		A	2001:67c:10b8::1^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.markmonitor.com`
		A	176.97.158.1^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.markmonitor.com`
NS	`ns3.markmonitor.com`
		A	2620:10a:80a9::1^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.1^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns4.markmonitor.com`
		A	2001:67c:1bc::1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.markmonitor.com`
		A	192.174.68.1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.markmonitor.com`
TXT	`v=spf1 -all`
SOA	`ns1.markmonitor.com`hostmaster@markmonitor.com 2025-12-15 #1

`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=1775938992

WOT: UNKNOWN (68/100)

Subdomains

www.ameritradeholding.com

Same first word

ameritradeholding.com

DNS History

15 records (5 active, 10 former)

●NSns1.markmonitor.com2026-02-21 → 2026-04-11 · 3 obs

○ 2017-09-03 04:26:12
● 2026-02-21 22:54:24
● 2026-04-11 20:48:40

○NSns1.p50.dynect.net2015-12-03 → 2017-09-03 · 5 obs

○ 2015-08-17 12:55:36
● 2015-12-03 10:27:56
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

○NSns1.tdameritrade.com2017-09-03 → 2017-09-03 · 4 obs

○ 2015-12-03 10:27:56
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

●NSns2.markmonitor.com2026-02-21 → 2026-04-11 · 3 obs

○ 2017-09-03 04:26:12
● 2026-02-21 22:54:24
● 2026-04-11 20:48:40

○NSns2.p50.dynect.net2015-12-03 → 2017-09-03 · 5 obs

○ 2015-08-17 12:55:36
● 2015-12-03 10:27:56
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

●NSns3.markmonitor.com2026-02-21 → 2026-04-11 · 3 obs

○ 2017-09-03 04:26:12
● 2026-02-21 22:54:24
● 2026-04-11 20:48:40

○NSns3.p50.dynect.net2015-12-03 → 2017-09-03 · 5 obs

○ 2015-08-17 12:55:36
● 2015-12-03 10:27:56
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

●NSns4.markmonitor.com2026-02-21 → 2026-04-11 · 3 obs

○ 2017-09-03 04:26:12
● 2026-02-21 22:54:24
● 2026-04-11 20:48:40

○NSns4.p50.dynect.net2015-12-03 → 2017-09-03 · 5 obs

○ 2015-08-17 12:55:36
● 2015-12-03 10:27:56
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

○NSpdns151.ultradns.biz2015-08-17 → 2017-09-03 · 4 obs

● 2015-08-17 12:55:36
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

○NSpdns151.ultradns.com2015-08-17 → 2017-09-03 · 4 obs

● 2015-08-17 12:55:36
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

○NSpdns151.ultradns.net2015-08-17 → 2017-09-03 · 4 obs

● 2015-08-17 12:55:36
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

○NSpdns151.ultradns.org2015-08-17 → 2017-09-03 · 4 obs

● 2015-08-17 12:55:36
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

●A127.0.0.12026-02-21 → 2026-04-11 · 3 obs

○ 2017-09-03 04:26:12
● 2026-02-21 22:54:24
● 2026-04-11 20:48:40

○A199.200.9.62015-08-17 → 2017-09-03 · 4 obs

● 2015-08-17 12:55:36
● 2017-09-03 04:26:12
○ 2026-02-21 22:54:24
○ 2026-04-11 20:48:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
ameritradeholding.com	ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns2.markmonitor.com	8 records

✅ Authoritative Response

Server:192.174.68.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ameritradeholding.com (unsigned zone)

⏱️ Timing

Total: 231ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`127.0.0.1`
NS	4	`ns4.markmonitor.com, ns2.markmonitor.com...`
TXT	1	`v=spf1 -all`
SOA	1	`ns1.markmonitor.com hostmaster.markmonit`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns1.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com...)

Analysis

Hierarchy

ameritradeholding.com is a parent of www.ameritradeholding.com.

IP Addresses

ameritradeholding.com points to a single IP number: 127.0.0.1.

Other host names, for instance fwspwgs.100webspace.net, mail.sygma.de, savitrans.com.vn, funz.eu and capicholo.com share IP numbers with ameritradeholding.com.

Name Servers

ameritradeholding.com is delegated to four name servers: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and ns4.markmonitor.com.

ameritradeholding.com at least partially shares name servers with other domains, for instance hgcspacesaver.com, giftcardstore.be, costaneo-romantica.com, wendagoogle.com and myadventus.com.

these name servers are commonly used with ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.

Host names with two IP numbers:

ns1.markmonitor.com points to: 2620:10a:80a8::1 and 149.112.160.1.

ns2.markmonitor.com points to: 2001:67c:10b8::1 and 176.97.158.1.

ns3.markmonitor.com points to: 2620:10a:80a9::1 and 149.112.161.1.

ns4.markmonitor.com points to: 2001:67c:1bc::1 and 192.174.68.1.

ameritradeholding.com - robtex.com