us.prairielearn.com - robtex.com

us.prairielearn.com

DNSSEC⚠️ Not signed
A2606:4700:20::681a:642🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:742🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:48c2🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.6.66Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.7.66Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.72.194🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.26.6.66, 104.26.7.66, 172.67.72.194
IPv6 hints2606:4700:20::681a:642, 2606:4700:20::681a:742, 2606:4700:20::ac43:48c2

prairielearn.com

DNSSEC⚠️ Not signed
A2606:4700:20::681a:642🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:742🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:48c2🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.6.66Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.7.66Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.72.194🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSarmfazh.ns.cloudflare.com ⭐
NSmeiling.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXalt3.aspmx.l.google.com(10)
MXalt4.aspmx.l.google.com(10)
MXoktpzuuh347lef6xywtertiwoxmawhxakgwhvfhactewikhopxzq.mx-verification.google.com(15)
TXTMS=6A8ADBB032E2CD9CD93B187BE98CFA1C6F4744F9
TXTapple-domain-verification=5dsmepwghtB9n3gK
TXTgoogle-site-verification=WPirh3_V7zkkxX23U6wNXhZjBbNPawrefzjxDED5VwM
TXTstripe-verification=1eedf9f773dc8386ee6e28e6c51457c8ac45653080ed8e8960c03bbff...
TXTv=spf1 include:_spf.google.com include:spf.zoho.com include:transmail.net inc...
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.26.6.66, 104.26.7.66, 172.67.72.194
IPv6 hints2606:4700:20::681a:642, 2606:4700:20::681a:742, 2606:4700:20::ac43:48c2
SOAarmfazh.ns.cloudflare.comdns@cloudflare.com serial=2399700841
📈 Tranco rank: #23,546

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DNS History

6 records (6 active, 0 former)

A104.26.6.66104.26.7.66172.67.72.1942606:4700:20::681a:6422606:4700:20::681a:7422606:4700:20::ac43:48c2
●A104.26.6.662026-03-13 → 2026-04-13 · 2 obs
● 2026-03-13 18:43:50
● 2026-04-13 14:19:16
●A104.26.7.662026-03-13 → 2026-04-13 · 2 obs
● 2026-03-13 18:43:50
● 2026-04-13 14:19:16
●A172.67.72.1942026-03-13 → 2026-04-13 · 2 obs
● 2026-03-13 18:43:50
● 2026-04-13 14:19:16
●A2606:4700:20::681a:6422026-03-13 → 2026-04-13 · 2 obs
● 2026-03-13 18:43:50
● 2026-04-13 14:19:16
●A2606:4700:20::681a:7422026-03-13 → 2026-04-13 · 2 obs
● 2026-03-13 18:43:50
● 2026-04-13 14:19:16
●A2606:4700:20::ac43:48c22026-03-13 → 2026-04-13 · 2 obs
● 2026-03-13 18:43:50
● 2026-04-13 14:19:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comi.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net, m.gtld-servers.net...-
prairielearn.commeiling.ns.cloudflare.com, armfazh.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.254

NS records: meiling.ns.cloudflare.com, armfazh.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for prairielearn.com (unsigned zone)

⏱️ Timing

Total: 148ms | Queries: -

📄 Records

TypeCountSample Data
A3104.26.7.66, 172.67.72.194...
AAAA32606:4700:20::681a:742, 2606:4700:20::681a:642...
HTTPS1{"priority":1,"target":".","alpn":["h2"]

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

us.prairielearn.com resolves to six IP numbers: 2606:4700:20::681a:642, 2606:4700:20::681a:742, 2606:4700:20::ac43:48c2, 104.26.6.66, 104.26.7.66 and 172.67.72.194.

Other host names such as cdn.compassprep.com, pixelmanifest.com, mitchellinstrument.com, webdesign-finder.com and occident.se share IP numbers with us.prairielearn.com.