Domain
piazza.com
Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.
Run a live full scan of piazza.com
On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.
Hosting IPs
17
A/AAAA targets
Subdomains
49
CT + scan + body
Record Types
5
seen in DNS
Observed Certs
5
in our scans
DNS Records
A
100.48.183.57, 100.50.220.201, 100.52.59.187, 100.59.112.30, 107.20.177.212, 18.205.146.192, 18.208.122.119, 18.213.191.46
AAAA
—
MX
10 piazza-com.mail.protection.outlook.com
NS
ns-1360.awsdns-42.org, ns-1868.awsdns-41.co.uk, ns-74.awsdns-09.com, ns-987.awsdns-59.net
TXT
apple-domain-verification=NvgAGTreJ9br6TT3, google-site-verification=vP_7vShksrvqA6VobTihMByOMO-jlUzs59fLoyKIrQU, v=spf1 a mx include:u5126.wl127.sendgrid.net include:spf.protection.outlook.com include:amazonses.com -all
CNAME
—
CAA
0 issue "amazonaws.com", 0 issue "digicert.com", 0 issue "godaddy.com", 0 issue "letsencrypt.org", 0 issuewild "godaddy.com"
WHOIS / Registration
Registration data planned
Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.
Subdomains
Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.
| Subdomain | Resolves to | Last seen |
|---|---|---|
| piazza.com | 2026-07-27 00:37:56.931 | |
| checkin.piazza.com | 2026-07-16 05:19:42.639 | |
| push.piazza.com | 2026-07-16 05:19:42.639 | |
| recruiting.piazza.com | 2026-07-16 05:19:42.639 | |
| talent.piazza.com | 2026-07-16 05:19:42.639 | |
| www.piazza.com | 2026-07-16 05:19:42.639 | |
| earlyaccess.piazza.com | 2026-07-16 05:19:42.639 | |
| cdn-private.piazza.com | 1970-01-01 00:00:00.000 | |
| cdn-test-private.piazza.com | 1970-01-01 00:00:00.000 | |
| cdn-test-uploads.piazza.com | 1970-01-01 00:00:00.000 | |
| cdn-uploads.piazza.com | 1970-01-01 00:00:00.000 | |
| credentials.piazza.com | 1970-01-01 00:00:00.000 | |
| development.cd.piazza.com | 1970-01-01 00:00:00.000 | |
| nonproduction-credentials.piazza.com | 1970-01-01 00:00:00.000 | |
| old.test.piazza.com | 1970-01-01 00:00:00.000 | |
| prod-access.piazza.com | 1970-01-01 00:00:00.000 | |
| prod-task.piazza.com | 1970-01-01 00:00:00.000 | |
| production.cd.piazza.com | 1970-01-01 00:00:00.000 | |
| test-cdn.piazza.com | 1970-01-01 00:00:00.000 | |
| test-credentials.piazza.com | 1970-01-01 00:00:00.000 | |
| test-push.piazza.com | 1970-01-01 00:00:00.000 | |
| test-talent.piazza.com | 1970-01-01 00:00:00.000 | |
| test.piazza.com | 1970-01-01 00:00:00.000 |
Tech Stack
Tech detection pending
Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.
TLS Certificates
Subject: ecs.studio-piazza.com
Issuer: YR1
SANs: ecs.studio-piazza.com
Subject: piazza.com
Issuer: Amazon RSA 2048 M04
SANs: checkin.piazza.com, earlyaccess.piazza.com, piazza.com, prod-access.piazza.com, prod-task.piazza.com, push.piazza.com, recruiting.piazza.com, talent.piazza.com, www.piazza.com
Subject: piazza.com
Issuer: Amazon RSA 2048 M04
SANs: checkin.piazza.com, earlyaccess.piazza.com, piazza.com, prod-access.piazza.com, prod-task.piazza.com, push.piazza.com, recruiting.piazza.com, talent.piazza.com, www.piazza.com
IPs Citing This Domain
Hosts whose HTML body references this domain. Strong signal for origin/mirror/embed discovery.
143.42.122.49:443
href · ×4
64.90.53.59:80
href · ×3
131.246.117.32:80
href · ×2
159.89.179.140:443
href · ×2
208.87.225.232:80
href · ×1
Origin / IP-Leak
USP
When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.
No origin-IP leaks detected (yet)
Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.
CT-Log Evidence
Certificates from public Certificate Transparency logs whose subject or SAN names this domain — including historic certs we never observed live.
a36567a3c45cb2cd…
google · xenon2026h2
Subject: piazza.com
Issuer: Amazon RSA 2048 M04
SANs: piazza.com, talent.piazza.com, push.piazza.com, recruiting.piazza.com, www.piazza.com, checkin.piazza.com, prod-access.piazza.com, earlyaccess.piazza.com, prod-task.piazza.com
Valid: 2026-03-17 00:00:00 → 2026-09-30 23:59:59
dce00b0b92688e7e…
google · xenon2026h2
Subject: piazza.com
Issuer: Amazon RSA 2048 M04
SANs: piazza.com, talent.piazza.com, push.piazza.com, recruiting.piazza.com, www.piazza.com, checkin.piazza.com, prod-access.piazza.com, earlyaccess.piazza.com, prod-task.piazza.com
Valid: 2026-03-17 00:00:00 → 2026-09-30 23:59:59
dfdbf5bb296581b3…
digicert · wyvern2026h2
Subject: piazza.com
Issuer: Amazon RSA 2048 M02
SANs: piazza.com, talent.piazza.com, push.piazza.com, recruiting.piazza.com, www.piazza.com, checkin.piazza.com, prod-access.piazza.com, prod-task.piazza.com
Valid: 2025-07-10 00:00:00 → 2026-08-08 23:59:59
Threat Intelligence
Domain threat-intel pending
Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.
History
Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.
| Type | Value | First seen | Last seen |
|---|---|---|---|
| CAA | 0 issue "amazonaws.com" | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| A | 32.199.70.97 | 2026-05-26 07:03:02.977 | 2026-06-02 19:38:51.265 |
| CAA | 0 issue "godaddy.com" | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| CAA | 0 issue "letsencrypt.org" | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| A | 54.173.98.225 | 2026-05-26 07:03:02.977 | 2026-05-26 07:07:02.960 |
| CAA | 0 issuewild "godaddy.com" | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| NS | ns-987.awsdns-59.net | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| NS | ns-1360.awsdns-42.org | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| NS | ns-1868.awsdns-41.co.uk | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| TXT | v=spf1 a mx include:u5126.wl127.sendgrid.net include:spf.protection.outlook.com include:amazonses.com -all | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| TXT | apple-domain-verification=NvgAGTreJ9br6TT3 | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| MX | 10 piazza-com.mail.protection.outlook.com | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| TXT | google-site-verification=vP_7vShksrvqA6VobTihMByOMO-jlUzs59fLoyKIrQU | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| NS | ns-74.awsdns-09.com | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| A | 3.219.203.217 | 2026-05-26 07:03:02.977 | 2026-05-27 02:44:37.642 |
| CAA | 0 issue "digicert.com" | 2026-05-26 07:03:02.977 | 2026-07-27 00:37:56.931 |
| A | 18.208.122.119 | 2026-05-27 02:35:44.599 | 2026-06-02 19:38:51.265 |
| A | 34.230.148.252 | 2026-06-02 19:38:51.265 | 2026-06-02 19:38:51.265 |
| A | 18.205.146.192 | 2026-06-14 22:52:09.672 | 2026-06-15 05:16:01.828 |
| A | 52.73.146.253 | 2026-06-14 22:52:09.672 | 2026-06-15 05:16:01.828 |
| A | 54.209.51.109 | 2026-06-14 22:52:09.672 | 2026-06-15 05:16:01.828 |
| A | 100.50.220.201 | 2026-06-20 13:23:11.634 | 2026-06-20 13:27:43.979 |
| A | 100.52.59.187 | 2026-06-20 13:23:11.634 | 2026-06-20 13:27:43.979 |
| A | 100.59.112.30 | 2026-06-20 13:23:11.634 | 2026-06-20 13:27:43.979 |
| A | 107.20.177.212 | 2026-07-16 05:19:42.639 | 2026-07-19 17:33:33.441 |
| A | 100.48.183.57 | 2026-07-16 05:19:42.639 | 2026-07-19 17:33:33.441 |
| A | 54.89.203.190 | 2026-07-16 05:19:42.639 | 2026-07-19 17:33:33.441 |
| A | 35.172.59.8 | 2026-07-27 00:37:56.931 | 2026-07-27 00:37:56.931 |
| A | 18.213.191.46 | 2026-07-27 00:37:56.931 | 2026-07-27 00:37:56.931 |
| A | 44.221.124.32 | 2026-07-27 00:37:56.931 | 2026-07-27 00:37:56.931 |