`spark-curriculum.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:cec9^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:3505^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.53.5^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.206.201^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`barbara.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3af8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`barbara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`barbara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`barbara.ns.cloudflare.com`
		A	108.162.192.248^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`barbara.ns.cloudflare.com`
		A	172.64.32.248^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`barbara.ns.cloudflare.com`
		A	173.245.58.248^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`barbara.ns.cloudflare.com`
NS	`decker.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c9b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c39b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`decker.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:239b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`decker.ns.cloudflare.com`
		A	108.162.195.155^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
		A	162.159.44.155^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
		A	172.64.35.155^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.53.5, 172.67.206.201
		IPv6 hints	2606:4700:3032::ac43:cec9, 2606:4700:3036::6815:3505
SOA	`barbara.ns.cloudflare.com`dns@cloudflare.com serial=2411793432

`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=1786649589

⚠️ On DNS blocklist: tif, tif.medium, tif.mini

Same first word

spark-curriculum.com

DNS History

7 records (6 active, 1 former)

●NSbarbara.ns.cloudflare.com2026-05-14 → 2026-08-13 · 2 obs

● 2026-05-14 04:10:06
● 2026-08-13 19:35:34

●NSdecker.ns.cloudflare.com2026-05-14 → 2026-08-13 · 2 obs

● 2026-05-14 04:10:06
● 2026-08-13 19:35:34

●A104.21.53.52026-05-14 → 2026-08-13 · 2 obs

● 2026-05-14 04:10:06
● 2026-08-13 19:35:34

●A172.67.206.2012026-05-14 → 2026-08-13 · 2 obs

● 2026-05-14 04:10:06
● 2026-08-13 19:35:34

○A2606:4700:3030::6815:35052026-05-14 → 2026-06-08 · 4 obs

● 2026-05-14 04:10:06
● 2026-06-08 02:56:38
○ 2026-07-15 20:53:44
○ 2026-08-13 19:35:34

●A2606:4700:3032::ac43:cec92026-05-14 → 2026-08-13 · 2 obs

● 2026-05-14 04:10:06
● 2026-08-13 19:35:34

●A2606:4700:3036::6815:35052026-07-15 → 2026-08-13 · 3 obs

○ 2026-06-08 02:56:38
● 2026-07-15 20:53:44
● 2026-08-13 19:35:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
spark-curriculum.com	barbara.ns.cloudflare.com, decker.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.248

NS records: barbara.ns.cloudflare.com, decker.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for spark-curriculum.com (unsigned zone)

⏱️ Timing

Total: 163ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.53.5, 172.67.206.201`
AAAA	2	`2606:4700:3036::6815:3505, 2606:4700:3032::ac43:cec9`
NS	2	`barbara.ns.cloudflare.com, decker.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`barbara.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

spark-curriculum.com points to the four IP addresses 104.21.53.5, 172.67.206.201, 2606:4700:3032::ac43:cec9 and 2606:4700:3036::6815:3505.

Two other host names, along with inlandtech.net, cofemem.com.mx and gemfellowship.org, also share IP numbers with spark-curriculum.com.

Name Servers

spark-curriculum.com is delegated to two name servers: barbara.ns.cloudflare.com and decker.ns.cloudflare.com.

spark-curriculum.com shares its NS records with other domains, for example rothnet.co.il, pure-upgrade.com, aebsinternal.com and two others.

At least some of spark-curriculum.com's name servers are shared with other domains, for example ynqcsh.com, mamie-chaude.com, tjswmy.com and two more.

These name servers are often deployed together with the name servers nancy.ns.cloudflare.com, trevor.ns.cloudflare.com, sasha.ns.cloudflare.com and quincy.ns.cloudflare.com.

DNS names with 6 IP addresses:

barbara.ns.cloudflare.com resolves to 108.162.192.248, 172.64.32.248, 173.245.58.248 and 3 other IP addresses.

decker.ns.cloudflare.com resolves to 108.162.195.155, 162.159.44.155, 172.64.35.155 and 3 other IP addresses.

spark-curriculum.com - robtex.com