`redbirdlearning.tv`

DNSSEC	⚠️ Not signed
NS	`pdns85.ultradns.com` ⭐
		A	2001:502:f3ff::79^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns85.ultradns.com`
		A	156.154.64.85^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns85.ultradns.com`
NS	`pdns85.ultradns.biz`
		A	2610:a1:1015::79^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns85.ultradns.biz`
		A	156.154.66.85^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns85.ultradns.biz`
NS	`pdns85.ultradns.net`
		A	2610:a1:1014::79^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns85.ultradns.net`
		A	156.154.65.85^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns85.ultradns.net`
NS	`pdns85.ultradns.org`
		A	2001:502:4612::79^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns85.ultradns.org`
		A	156.154.67.85^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns85.ultradns.org`
TXT	`v=spf1 -all`
SOA	`pdns85.ultradns.com`hostmaster@mheducation.com 2024-01-19 #5

`tv`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.tv` ⭐
	NS	`b.nic.tv`
	NS	`c.nic.tv`
	NS	`x.nic.tv`
	NS	`y.nic.tv`
	NS	`z.nic.tv`
	SOA	`a.nic.tv`admin@tldns.godaddy serial=1777054263

Same first word

redbirdlearning.tv

redbirdlearning.co

redbirdlearning.com

redbirdlearning.us

DNS History

10 records (4 active, 6 former)

○NSns73.domaincontrol.com2015-08-09 → 2020-01-19 · 4 obs

● 2015-08-09 05:31:38
● 2020-01-19 13:39:36
○ 2026-04-22 04:43:40
○ 2026-04-24 18:34:52

○NSns74.domaincontrol.com2015-08-09 → 2020-01-19 · 4 obs

● 2015-08-09 05:31:38
● 2020-01-19 13:39:36
○ 2026-04-22 04:43:40
○ 2026-04-24 18:34:52

●NSpdns85.ultradns.biz2026-04-22 → 2026-04-24 · 3 obs

○ 2020-01-19 13:39:36
● 2026-04-22 04:43:40
● 2026-04-24 18:34:52

●NSpdns85.ultradns.com2026-04-22 → 2026-04-24 · 3 obs

○ 2020-01-19 13:39:36
● 2026-04-22 04:43:40
● 2026-04-24 18:34:52

●NSpdns85.ultradns.net2026-04-22 → 2026-04-24 · 3 obs

○ 2020-01-19 13:39:36
● 2026-04-22 04:43:40
● 2026-04-24 18:34:52

●NSpdns85.ultradns.org2026-04-22 → 2026-04-24 · 3 obs

○ 2020-01-19 13:39:36
● 2026-04-22 04:43:40
● 2026-04-24 18:34:52

○MXmailstore1.secureserver.net2015-08-09 → 2020-01-19 · 4 obs

● 2015-08-09 05:31:38
● 2020-01-19 13:39:36
○ 2026-04-22 04:43:40
○ 2026-04-24 18:34:52

○MXsmtp.secureserver.net2015-08-09 → 2020-01-19 · 4 obs

● 2015-08-09 05:31:38
● 2020-01-19 13:39:36
○ 2026-04-22 04:43:40
○ 2026-04-24 18:34:52

○A184.168.131.2412020-01-19 → 2020-01-19 · 4 obs

○ 2017-02-18 19:04:42
● 2020-01-19 13:39:36
○ 2026-04-22 04:43:40
○ 2026-04-24 18:34:52

○A184.168.221.42015-08-09 → 2017-02-18 · 4 obs

● 2015-08-09 05:31:38
● 2017-02-18 19:04:42
○ 2020-01-19 13:39:36
○ 2026-04-24 18:34:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tv	b.nic.tv, z.nic.tv, x.nic.tv, c.nic.tv...	-
redbirdlearning.tv	pdns85.ultradns.com, pdns85.ultradns.org, pdns85.ultradns.biz, pdns85.ultradns.net	-

✅ Authoritative Response

Server:156.154.66.85

NS records: pdns85.ultradns.com, pdns85.ultradns.org, pdns85.ultradns.biz, pdns85.ultradns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for redbirdlearning.tv (unsigned zone)

⏱️ Timing

Total: 644ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`pdns85.ultradns.biz, pdns85.ultradns.com...`
TXT	1	`v=spf1 -all`
SOA	1	`pdns85.ultradns.com hostmaster.mheducati`

Analysis

Name Servers

redbirdlearning.tv is delegated to four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.

redbirdlearning.tv shares some name servers with other domains, for example istudyom.com, pullmarks.com, ntccpg.com, mhesciencecanada.com and mcgraw-hillbookstore.net.

Host names with two IP numbers

Two IPs per host:

pdns85.ultradns.biz points to 2610:a1:1015::79 and 156.154.66.85

pdns85.ultradns.com points to 2001:502:f3ff::79 and 156.154.64.85

pdns85.ultradns.net points to 2610:a1:1014::79 and 156.154.65.85

pdns85.ultradns.org points to 2001:502:4612::79 and 156.154.67.85

redbirdlearning.tv - robtex.com