auth.lambdaschool.com - robtex.com

auth.lambdaschool.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:56e7🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:8998🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.86.231Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.137.152🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.86.231, 172.67.137.152
IPv6 hints2606:4700:3031::6815:56e7, 2606:4700:3036::ac43:8998
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=224, name=cloudflare-ech.com

lambdaschool.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:56e7🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:8998🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.86.231Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.137.152🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSsofia.ns.cloudflare.com ⭐
NStony.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)
TXTMS=479AF4B7AF98B5FDB3D870D231BB76637939304F
TXTZOOM_verify_wkRmw_ooRQurM7uJ-GsP3Q
TXTapple-domain-verification=1nZ2MkVSav14pZQG
TXTfacebook-domain-verification=o92k7h74bde477y1exdl2qn2ct8jhw
TXTgoogle-site-verification=7g1HVeyPsqk9GJDxCMvEEprDjAYKkZmOEbesQf_AohU
TXTgoogle-site-verification=lJ6EO1wNbStfiTtdn820nG11h_v-EU4SXzR0dxJFnmA
TXTgoogle-site-verification=ordKo18m_zcK0JHzkqAijSSvluZF_vCV7veNWTYtnd8
TXTgoogle-site-verification=wtnDNdNQe8ITVUz0aMcLUY3un_QtBLLTOMVzgkCEJys
TXTv=spf1 include:_spf.google.com include:sendgrid.net include:aspmx.pardot.com ...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.86.231, 172.67.137.152
IPv6 hints2606:4700:3031::6815:56e7, 2606:4700:3036::ac43:8998
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=224, name=cloudflare-ech.com
SOAsofia.ns.cloudflare.comdns@cloudflare.com serial=2406564327
rank #339202 globally
rank #139433 in the tld

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DNS History

10 records (4 active, 6 former)

A104.21.86.231172.67.137.1522606:4700:3031::6815:56e72606:4700:3036::ac43:8998188.114.96.0188.114.97.02606:4700:3032::6815:56e72606:4700:3035::ac43:89982a06:98c1:3120::2a06:98c1:3121::
●A104.21.86.2312026-05-24 → 2026-08-02 · 13 obs
● 2026-05-24 15:45:14
● 2026-05-25 02:19:56
○ 2026-05-25 21:06:12
○ 2026-06-05 21:30:38
● 2026-06-07 20:33:44
● 2026-06-08 11:10:12
○ 2026-06-09 21:56:10
● 2026-06-10 17:10:46
● 2026-06-12 04:25:14
○ 2026-06-12 15:57:38
○ 2026-06-14 09:15:20
● 2026-06-26 16:10:34
● 2026-08-02 14:27:50
●A172.67.137.1522026-05-24 → 2026-08-02 · 13 obs
● 2026-05-24 15:45:14
● 2026-05-25 02:19:56
○ 2026-05-25 21:06:12
○ 2026-06-05 21:30:38
● 2026-06-07 20:33:44
● 2026-06-08 11:10:12
○ 2026-06-09 21:56:10
● 2026-06-10 17:10:46
● 2026-06-12 04:25:14
○ 2026-06-12 15:57:38
○ 2026-06-14 09:15:20
● 2026-06-26 16:10:34
● 2026-08-02 14:27:50
○A188.114.96.02026-05-25 → 2026-06-14 · 12 obs
○ 2026-05-25 02:19:56
● 2026-05-25 21:06:12
● 2026-06-05 21:30:38
○ 2026-06-07 20:33:44
○ 2026-06-08 11:10:12
● 2026-06-09 21:56:10
○ 2026-06-10 17:10:46
○ 2026-06-12 04:25:14
● 2026-06-12 15:57:38
● 2026-06-14 09:15:20
○ 2026-06-26 16:10:34
○ 2026-08-02 14:27:50
○A188.114.97.02026-05-25 → 2026-06-14 · 12 obs
○ 2026-05-25 02:19:56
● 2026-05-25 21:06:12
● 2026-06-05 21:30:38
○ 2026-06-07 20:33:44
○ 2026-06-08 11:10:12
● 2026-06-09 21:56:10
○ 2026-06-10 17:10:46
○ 2026-06-12 04:25:14
● 2026-06-12 15:57:38
● 2026-06-14 09:15:20
○ 2026-06-26 16:10:34
○ 2026-08-02 14:27:50
●A2606:4700:3031::6815:56e72026-06-26 → 2026-08-02 · 3 obs
○ 2026-06-14 09:15:20
● 2026-06-26 16:10:34
● 2026-08-02 14:27:50
○A2606:4700:3032::6815:56e72026-05-24 → 2026-06-12 · 11 obs
● 2026-05-24 15:45:14
● 2026-05-25 02:19:56
○ 2026-05-25 21:06:12
○ 2026-06-05 21:30:38
● 2026-06-07 20:33:44
● 2026-06-08 11:10:12
○ 2026-06-09 21:56:10
● 2026-06-10 17:10:46
● 2026-06-12 04:25:14
○ 2026-06-12 15:57:38
○ 2026-08-02 14:27:50
○A2606:4700:3035::ac43:89982026-05-24 → 2026-06-12 · 11 obs
● 2026-05-24 15:45:14
● 2026-05-25 02:19:56
○ 2026-05-25 21:06:12
○ 2026-06-05 21:30:38
● 2026-06-07 20:33:44
● 2026-06-08 11:10:12
○ 2026-06-09 21:56:10
● 2026-06-10 17:10:46
● 2026-06-12 04:25:14
○ 2026-06-12 15:57:38
○ 2026-08-02 14:27:50
●A2606:4700:3036::ac43:89982026-06-26 → 2026-08-02 · 3 obs
○ 2026-06-14 09:15:20
● 2026-06-26 16:10:34
● 2026-08-02 14:27:50
○A2a06:98c1:3120::2026-05-25 → 2026-06-14 · 12 obs
○ 2026-05-25 02:19:56
● 2026-05-25 21:06:12
● 2026-06-05 21:30:38
○ 2026-06-07 20:33:44
○ 2026-06-08 11:10:12
● 2026-06-09 21:56:10
○ 2026-06-10 17:10:46
○ 2026-06-12 04:25:14
● 2026-06-12 15:57:38
● 2026-06-14 09:15:20
○ 2026-06-26 16:10:34
○ 2026-08-02 14:27:50
○A2a06:98c1:3121::2026-05-25 → 2026-06-14 · 12 obs
○ 2026-05-25 02:19:56
● 2026-05-25 21:06:12
● 2026-06-05 21:30:38
○ 2026-06-07 20:33:44
○ 2026-06-08 11:10:12
● 2026-06-09 21:56:10
○ 2026-06-10 17:10:46
○ 2026-06-12 04:25:14
● 2026-06-12 15:57:38
● 2026-06-14 09:15:20
○ 2026-06-26 16:10:34
○ 2026-08-02 14:27:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
lambdaschool.comsofia.ns.cloudflare.com, tony.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.240

NS records: sofia.ns.cloudflare.com, tony.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lambdaschool.com (unsigned zone)

⏱️ Timing

Total: 1643ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.86.231, 172.67.137.152
AAAA22606:4700:3036::ac43:8998, 2606:4700:3031::6815:56e7
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

auth.lambdaschool.com has four IP addresses: 104.21.86.231, 172.67.137.152, 2606:4700:3031::6815:56e7 and 2606:4700:3036::ac43:8998.

gamblersgeneralstore.com, bamorgan.com, zhuangshi021.com plus two other host names have IP numbers in common with auth.lambdaschool.com.