`smithsonianteacher.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:978f^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:50a3^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.80.163^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.151.143^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gene.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a9e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c09e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gene.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:209e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gene.ns.cloudflare.com`
		A	108.162.192.158^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
		A	172.64.32.158^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
		A	173.245.58.158^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
NS	`sri.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bea^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sri.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1ea^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sri.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21ea^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sri.ns.cloudflare.com`
		A	108.162.193.234^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sri.ns.cloudflare.com`
		A	172.64.33.234^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sri.ns.cloudflare.com`
		A	173.245.59.234^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sri.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.80.163, 172.67.151.143
		IPv6 hints	2606:4700:3031::ac43:978f, 2606:4700:3033::6815:50a3
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=206, name=cloudflare-ech.com
SOA	`gene.ns.cloudflare.com`dns@cloudflare.com serial=2401760595

`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=1776881422

Same first word

smithsonianteacher.com

smithsonianteacher.net

smithsonianteacher.org

DNS History

19 records (6 active, 13 former)

●NSgene.ns.cloudflare.com2017-02-19 → 2026-04-22 · 3 obs

○ 2016-06-18 23:50:42
● 2017-02-19 11:40:44
● 2026-04-22 18:24:46

○NSns.rackspace.com2015-07-09 → 2016-06-18 · 4 obs

● 2015-07-09 22:15:34
● 2016-06-18 23:50:42
○ 2017-02-19 11:40:44
○ 2026-04-22 18:24:46

○NSns2.rackspace.com2015-07-09 → 2016-06-18 · 4 obs

● 2015-07-09 22:15:34
● 2016-06-18 23:50:42
○ 2017-02-19 11:40:44
○ 2026-04-22 18:24:46

●NSsri.ns.cloudflare.com2017-02-19 → 2026-04-22 · 3 obs

○ 2016-06-18 23:50:42
● 2017-02-19 11:40:44
● 2026-04-22 18:24:46

●A104.21.80.1632026-02-19 → 2026-04-22 · 4 obs

○ 2020-01-04 06:28:10
● 2026-02-19 19:00:04
○ 2026-04-06 06:43:44
● 2026-04-22 18:24:46

○A104.27.174.1932017-02-19 → 2020-01-04 · 5 obs

○ 2016-06-18 23:50:42
● 2017-02-19 11:40:44
● 2020-01-04 06:28:10
○ 2026-02-19 19:00:04
○ 2026-04-22 18:24:46

○A104.27.175.1932017-02-19 → 2020-01-04 · 5 obs

○ 2016-06-18 23:50:42
● 2017-02-19 11:40:44
● 2020-01-04 06:28:10
○ 2026-02-19 19:00:04
○ 2026-04-22 18:24:46

●A172.67.151.1432026-02-19 → 2026-04-22 · 4 obs

○ 2020-01-04 06:28:10
● 2026-02-19 19:00:04
○ 2026-04-06 06:43:44
● 2026-04-22 18:24:46

○A188.114.96.02026-04-06 → 2026-04-06 · 3 obs

○ 2026-02-19 19:00:04
● 2026-04-06 06:43:44
○ 2026-04-22 18:24:46

○A188.114.97.02026-04-06 → 2026-04-06 · 3 obs

○ 2026-02-19 19:00:04
● 2026-04-06 06:43:44
○ 2026-04-22 18:24:46

○A2400:cb00:2048:1::681b:aec12017-02-19 → 2017-02-19 · 4 obs

○ 2016-06-18 23:50:42
● 2017-02-19 11:40:44
○ 2020-01-04 06:28:10
○ 2026-04-22 18:24:46

○A2400:cb00:2048:1::681b:afc12017-02-19 → 2017-02-19 · 4 obs

○ 2016-06-18 23:50:42
● 2017-02-19 11:40:44
○ 2020-01-04 06:28:10
○ 2026-04-22 18:24:46

○A2606:4700:30::681b:aec12020-01-04 → 2020-01-04 · 4 obs

○ 2017-02-19 11:40:44
● 2020-01-04 06:28:10
○ 2026-02-19 19:00:04
○ 2026-04-22 18:24:46

○A2606:4700:30::681b:afc12020-01-04 → 2020-01-04 · 4 obs

○ 2017-02-19 11:40:44
● 2020-01-04 06:28:10
○ 2026-02-19 19:00:04
○ 2026-04-22 18:24:46

●A2606:4700:3031::ac43:978f2026-02-19 → 2026-04-22 · 4 obs

○ 2020-01-04 06:28:10
● 2026-02-19 19:00:04
○ 2026-04-06 06:43:44
● 2026-04-22 18:24:46

●A2606:4700:3033::6815:50a32026-02-19 → 2026-04-22 · 4 obs

○ 2020-01-04 06:28:10
● 2026-02-19 19:00:04
○ 2026-04-06 06:43:44
● 2026-04-22 18:24:46

○A2a06:98c1:3120::2026-04-06 → 2026-04-06 · 3 obs

○ 2026-02-19 19:00:04
● 2026-04-06 06:43:44
○ 2026-04-22 18:24:46

○A2a06:98c1:3121::2026-04-06 → 2026-04-06 · 3 obs

○ 2026-02-19 19:00:04
● 2026-04-06 06:43:44
○ 2026-04-22 18:24:46

○A72.32.2.1722015-07-09 → 2016-06-18 · 4 obs

● 2015-07-09 22:15:34
● 2016-06-18 23:50:42
○ 2017-02-19 11:40:44
○ 2026-04-22 18:24:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
smithsonianteacher.com	gene.ns.cloudflare.com, sri.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.158

NS records: gene.ns.cloudflare.com, sri.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for smithsonianteacher.com (unsigned zone)

⏱️ Timing

Total: 156ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.80.163, 172.67.151.143`
AAAA	2	`2606:4700:3033::6815:50a3, 2606:4700:3031::ac43:978f`
NS	2	`gene.ns.cloudflare.com, sri.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`gene.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (gene.ns.cloudflare.com, gene.ns.cloudflare.com, gene.ns.cloudflare.com...)

Analysis

IP Addresses

smithsonianteacher.com resolves to four IP numbers: 2606:4700:3031::ac43:978f, 2606:4700:3033::6815:50a3, 104.21.80.163 and 172.67.151.143.

other host names for instance waperotis.com, 51shucheng.com, tjshytd.com, monitor.buyerguide.info and filbx.com share IP numbers with smithsonianteacher.com.

Name Servers

smithsonianteacher.com is delegated to two name servers: gene.ns.cloudflare.com and sri.ns.cloudflare.com.

smithsonianteacher.com shares the same name server setup as other domains, for example smithsonianbooks.com, josi.is, smithsonianstudenttravel.com, smithsonianmagazines.net and smithsoniankids.com.

smithsonianteacher.com at least partially shares name servers with other domains, for instance lyjqmy.com, zmg1.com, investbro.id, escolainternacional.net and bigscal.com.

These name servers are often used with paige.ns.cloudflare.com and carla.ns.cloudflare.com.

Host names with six IP numbers:

gene.ns.cloudflare.com points to: 2606:4700:50::adf5:3a9e, 2803:f800:50::6ca2:c09e, 2a06:98c1:50::ac40:209e, 108.162.192.158, 172.64.32.158 and 173.245.58.158; sri.ns.cloudflare.com points to: 2606:4700:58::adf5:3bea, 2803:f800:50::6ca2:c1ea, 2a06:98c1:50::ac40:21ea, 108.162.193.234, 172.64.33.234 and 173.245.59.234.

smithsonianteacher.com - robtex.com