developers.facebook.com
C
24 hours
100.00%
7 days
100.00%
30 days
100.00%
IPv4 / IPv6
6
4
SSL Certificate
7d
Security Headers
0/6
Status Badges
Click any snippet to copy. Use Markdown for GitHub READMEs, HTML for websites.
| Badge | Markdown | HTML |
|---|---|---|
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/status.svg" alt="Status"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/uptime.svg" alt="Uptime"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/response-time.svg" alt="Response Time"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/ssl.svg" alt="SSL"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/cwv.svg" alt="Performance"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/cwv.svg?category=accessibility" alt="Accessibility"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/cwv.svg?category=seo" alt="SEO"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/security-headers.svg" alt="Security Headers"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/uptime.svg?period=24h" alt="Uptime 24h"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/incidents.svg" alt="Incidents"></a> |
|
[](https://updown.website/site/developers.facebook.com/) |
<a href="https://updown.website/site/developers.facebook.com/"><img src="https://updown.website/badge/developers.facebook.com/ipv46.svg" alt="IPv4/IPv6"></a> |
Site Health (24 h)
HTTP Response
DNS Lookup
Ping
Up
Down
Reports
Incident
Active Incidents (1)
SSL cert for developers.facebook.com expires in 7 days
1h 32m
Started 2026-04-22 10:24:27 ·
1 consecutive failures
Monitoring
Recent HTTP Checks (24 h)
Total Checks
8
Success Rate
100%
Avg Response
2741 ms
Min / Max
117
/
4541 ms
Recent Checks
16:39
10:24
| Time | Status | Code | Response | Agent | Error |
|---|---|---|---|---|---|
| 10:24:27 | UP | 400 | 117 ms | prod-local | HTTP 400 |
| 08:39:48 | UP | 400 | 4007 ms | prod-local | HTTP 400 |
| 05:25:02 | UP | 400 | 4541 ms | prod-local | HTTP 400 |
| 02:44:12 | UP | 400 | 275 ms | prod-local | HTTP 400 |
| 01:21:45 | UP | 400 | 229 ms | prod-local | HTTP 400 |
| 22:53:56 | UP | 400 | 4522 ms | prod-local | HTTP 400 |
| 17:49:33 | UP | 400 | 4074 ms | prod-local | HTTP 400 |
| 16:39:56 | UP | 400 | 4162 ms | prod-local | HTTP 400 |
Incident History
| Status | Type | Title | Started | Duration | Failures |
|---|---|---|---|---|---|
| ACTIVE | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-22 10:24 | 1h 32m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-22 08:39 | 1h 44m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-22 05:25 | 3h 14m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-22 02:44 | 2h 40m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-22 01:21 | 1h 22m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 8 days | 2026-04-21 22:53 | 2h 27m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 8 days | 2026-04-21 17:49 | 5h 4m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 8 days | 2026-04-21 16:39 | 1h 9m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-21 11:27 | 5h 12m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-21 08:43 | 2h 44m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-21 07:33 | 1h 9m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-21 05:11 | 2h 22m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-21 03:10 | 2h 0m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-21 00:25 | 2h 45m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 8 days | 2026-04-20 21:49 | 2h 35m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 8 days | 2026-04-20 20:48 | 1h 0m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 8 days | 2026-04-20 19:29 | 1h 19m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 8 days | 2026-04-20 16:33 | 2h 55m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-20 14:55 | 1h 37m | 1 |
| RESOLVED | SSL Certificate Expiring | SSL cert for developers.facebook.com expires in 7 days | 2026-04-20 13:20 | 1h 35m | 1 |
Mail Server (SMTP) Checks
3 checked
| Status | MX Host | Port | IP | EHLO | STARTTLS | TLS Works | TLS Ver | Open Relay | Auth | Reverse DNS | Banner | Latency | Checked |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
smtpin.vvv.facebook.com |
25 |
66.220.149.251 |
— | — | — | — | — | 10004.6 ms | 18 minutes ago | ||||
smtpin.vvv.facebook.com |
465 |
66.220.149.251 |
— | — | — | — | — | 10003.9 ms | 18 minutes ago | ||||
smtpin.vvv.facebook.com |
587 |
66.220.149.251 |
— | — | — | — | — | 10005.1 ms | 18 minutes ago |
Service Checks (Banner Grab)
2 up
3 down
| Status | Port | Service | Version | IP | Banner | Latency | Checked |
|---|---|---|---|---|---|---|---|
80 |
http | proxygen-bolt | 2a03:2880:f380:8d:face:b00c:0:2 |
HTTP/1.1 301 Moved Permanently Location: https://developers.facebook.com/ Con… | 7.8 ms | 17 hours, 58 minutes ago | |
443 |
https | — | 2a03:2880:f380:8d:face:b00c:0:2 |
— | 508.0 ms | 17 hours, 58 minutes ago |
Security
SSL / TLS Certificate
7
days left
Expiring Soon
Jan 29, 2026
Apr 29, 2026
Issued → Expires
| Subject | countryName=US, stateOrProvinceName=California, localityName=Menlo Park, organizationName=Meta Platforms, Inc., commonName=*.facebook.com |
|---|---|
| Issuer | countryName=US, organizationName=DigiCert Inc, commonName=DigiCert Global G2 TLS RSA SHA256 2020 CA1 |
| Valid From | 2026-01-29 00:00 |
| Expires | 2026-04-29 23:59 |
| Serial Number | 077D9EC1214F0EDDA939DEA79F80BC4A |
| SHA-256 Fingerprint | aa:62:17:48:50:6d:d5:7f:aa:2d:a6:33:83:94:17:8e:1c:a7:5d:32:26:9f:ec:07:8f:12:f0:07:15:d2:60:6b |
| Subject Alt Names | *.facebook.com *.facebook.net *.fbcdn.net *.fbsbx.com *.m.facebook.com *.messenger.com *.xx.fbcdn.net *.xy.fbcdn.net *.xz.fbcdn.net facebook.com messenger.com |
| Last Checked | 2026-04-22 10:24:27 |
Latest HTTP Response Details
| Final URL | https://developers.facebook.com/ |
|---|---|
| Status Code | 400 |
| Response Time | 117 ms |
| Content Size | 2 KB (1.5 KB) |
| Content Type | text/html; charset="utf-8" |
| Server | — |
| TLS Version | TLSv1.3 |
|---|---|
| TLS Cipher | TLS_CHACHA20_POLY1305_SHA256 |
| Redirects | 0 |
| Checked | 2026-04-22 10:24:27 |
Email Security Posture
MX Records
SPF
Details
v=spf1 include:facebookmail.com -all
DMARC
Details
v=DMARC1; p=reject; rua=mailto:a@dmarc.facebookmail.com; ruf=mailto:fb-dmarc@datafeeds.phishlabs.com; pct=100
BIMI
MTA-STS
Strong
Overall
DNS & Network
DNS Intelligence (24h)
Avg Resolution
8.9 ms
Min / Max
3.6
/
19.5 ms
Record Types
6
Lookups (24h)
48
DNS Records
A
57.145.0.141
60s
11.8ms
AAAA
2a03:2880:f380:8d:face:b00c:0:2
60s
11.4ms
MX
| 10 | smtpin.vvv.facebook.com |
300s
8.0ms
TXT
SPF
(1)
v=spf1 include:facebookmail.com -all
1800s
6.5ms
CNAME
developers.c10r.facebook.com
299s
1.0ms
PTR
edge-star6-shv-01-bos5.facebook.com
2364s
1.7ms
DNS Propagation Inconsistent
| Resolver | IPs Returned | Response Time | Status |
|---|---|---|---|
| Quad9 |
57.145.0.141
|
5.11ms | |
57.145.0.141
|
17.66ms | ||
| AdGuard |
57.144.252.141
|
24.4ms | |
| OpenDNS |
57.145.0.141
|
22.16ms | |
| Cloudflare |
57.145.0.141
|
5.04ms |
WHOIS / Domain Registration
Registrar
RegistrarSafe, LLC
Registrant Organization
Meta Platforms, Inc.
Created
1997-03-29
Updated
2025-04-23
Expires
2034-03-30
Name Servers (WHOIS)
a.ns.facebook.com
b.ns.facebook.com
c.ns.facebook.com
d.ns.facebook.com
Domain Status
clientDeleteProhibited
clientTransferProhibited
clientUpdateProhibited
serverDeleteProhibited
serverTransferProhibited
serverUpdateProhibited
clientDeleteProhibited
clientTransferProhibited
clientUpdateProhibited
serverDeleteProhibited
serverTransferProhibited
serverUpdateProhibited
DNSSEC
Unsigned
Country
US
WHOIS Last Checked
2026-04-22 10:24
Resolution Time (A/AAAA recent)
01:21
10:24
| Time | Type | Values | TTL | Resolution | Nameserver |
|---|---|---|---|---|---|
| 10:24:26 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
2364s | 1.7 ms | — |
| 10:24:26 | CNAME |
developers.c10r.facebook.com
|
299s | 1.0 ms | 10.89.0.1 |
| 10:24:26 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 6.5 ms | 10.89.0.1 |
| 10:24:26 | MX |
10 smtpin.vvv.facebook.com
|
300s | 8.0 ms | 10.89.0.1 |
| 10:24:26 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 11.4 ms | 10.89.0.1 |
| 10:24:26 | A |
57.145.0.141
|
60s | 11.8 ms | 10.89.0.1 |
| 08:39:48 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
3600s | 149.6 ms | — |
| 08:39:48 | CNAME |
developers.c10r.facebook.com
|
1799s | 1.0 ms | 10.89.0.1 |
| 08:39:48 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 6.3 ms | 10.89.0.1 |
| 08:39:48 | MX |
10 smtpin.vvv.facebook.com
|
300s | 7.8 ms | 10.89.0.1 |
| 08:39:48 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 6.0 ms | 10.89.0.1 |
| 08:39:48 | A |
57.145.0.141
|
53s | 3.7 ms | 10.89.0.1 |
| 05:25:01 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
1319s | 6.6 ms | — |
| 05:25:01 | CNAME |
developers.c10r.facebook.com
|
299s | 0.9 ms | 10.89.0.1 |
| 05:25:01 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 7.3 ms | 10.89.0.1 |
| 05:25:01 | MX |
10 smtpin.vvv.facebook.com
|
300s | 17.2 ms | 10.89.0.1 |
| 05:25:01 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 17.4 ms | 10.89.0.1 |
| 05:25:01 | A |
57.145.0.141
|
60s | 6.0 ms | 10.89.0.1 |
| 02:44:11 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
3600s | 128.9 ms | — |
| 02:44:11 | CNAME |
developers.c10r.facebook.com
|
59s | 0.8 ms | 10.89.0.1 |
| 02:44:11 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 4.9 ms | 10.89.0.1 |
| 02:44:11 | MX |
10 smtpin.vvv.facebook.com
|
300s | 5.8 ms | 10.89.0.1 |
| 02:44:11 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 6.9 ms | 10.89.0.1 |
| 02:44:11 | A |
57.145.0.141
|
60s | 5.5 ms | 10.89.0.1 |
| 01:21:44 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
3600s | 37.0 ms | — |
| 01:21:44 | CNAME |
developers.c10r.facebook.com
|
299s | 1.0 ms | 10.89.0.1 |
| 01:21:44 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 5.6 ms | 10.89.0.1 |
| 01:21:44 | MX |
10 smtpin.vvv.facebook.com
|
300s | 12.9 ms | 10.89.0.1 |
| 01:21:44 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 6.0 ms | 10.89.0.1 |
| 01:21:44 | A |
57.145.0.141
|
17s | 5.5 ms | 10.89.0.1 |
| 22:53:55 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
3600s | 34.8 ms | — |
| 22:53:55 | CNAME |
developers.c10r.facebook.com
|
59s | 1.4 ms | 10.89.0.1 |
| 22:53:55 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 5.4 ms | 10.89.0.1 |
| 22:53:55 | MX |
10 smtpin.vvv.facebook.com
|
300s | 7.5 ms | 10.89.0.1 |
| 22:53:55 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 5.6 ms | 10.89.0.1 |
| 22:53:55 | A |
57.145.0.141
|
60s | 10.9 ms | 10.89.0.1 |
| 17:49:33 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
2625s | 8.3 ms | — |
| 17:49:33 | CNAME |
developers.c10r.facebook.com
|
1799s | 1.0 ms | 10.89.0.1 |
| 17:49:33 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 17.2 ms | 10.89.0.1 |
| 17:49:33 | MX |
10 smtpin.vvv.facebook.com
|
300s | 19.2 ms | 10.89.0.1 |
| 17:49:33 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 19.5 ms | 10.89.0.1 |
| 17:49:32 | A |
57.145.0.141
|
12s | 4.9 ms | 10.89.0.1 |
| 16:39:56 | PTR |
2a03:2880:f380:8d:face:b00c:0:2
|
3600s | 47.5 ms | — |
| 16:39:56 | CNAME |
developers.c10r.facebook.com
|
39s | 1.1 ms | 10.89.0.1 |
| 16:39:56 | TXT |
v=spf1 include:facebookmail.com -all
|
1800s | 17.5 ms | 10.89.0.1 |
| 16:39:56 | MX |
10 smtpin.vvv.facebook.com
|
300s | 10.6 ms | 10.89.0.1 |
| 16:39:56 | AAAA |
2a03:2880:f380:8d:face:b00c:0:2
|
60s | 17.5 ms | 10.89.0.1 |
| 16:39:56 | A |
57.145.0.141
|
40s | 3.6 ms | 10.89.0.1 |
Open Ports
7
Open Ports
7
IPs Scanned
7
| Port | Protocol | Service | IP Address | Status | Latency | Banner |
|---|---|---|---|---|---|---|
80 |
TCP | http | 31.13.66.4 |
Open | 13.1 ms | — |
80 |
TCP | http | 2a03:2880:f003:c07:face:b00c:0:2 |
Open | 12.6 ms | — |
80 |
TCP | http | 57.145.0.141 |
Open | 2.1 ms | — |
80 |
TCP | http | 2a03:2880:f380:8d:face:b00c:0:2 |
Open | 8.5 ms | — |
443 |
TCP | https | 57.145.0.141 |
Open | 2.0 ms | — |
443 |
TCP | https | 2a03:2880:f003:c07:face:b00c:0:2 |
Open | 12.4 ms | — |
443 |
TCP | https | 2a03:2880:f380:8d:face:b00c:0:2 |
Open | 7.4 ms | — |
Active IP Addresses
| IP Address | Version | Reverse DNS | CIDR | Country | City | ASN | Reputation | First Seen | Last DNS | Hits | Misses | Uptime % | Avg Latency |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2a03:2880:f380:8d:face:b00c:0:2 |
IPv6 |
edge-star6-shv-01-bos5.facebook.com
|
2a03:2880:f380::/48
|
US | Boston | AS32934 Facebook, Inc. | Clean | 2026-04-20 06:44 | 2026-04-22 10:24 | 8 | 0 | 100.0% | 8.8 ms |
57.145.0.141 |
IPv4 | — |
57.145.0.0/24
|
US | Boston | AS32934 Facebook, Inc. | Clean | 2026-04-20 06:44 | 2026-04-22 10:24 | 8 | 0 | 100.0% | 10.2 ms |
66.220.149.251 |
IPv4 |
smtpin.vvv.facebook.com
|
— | — | — | — | — | 2026-04-21 05:51 | 2026-04-21 05:51 | 0 | 0 | — | — |
2a03:2880:f35a:8d:face:b00c:0:2 |
IPv6 | — | — | US | New York | AS32934 Facebook, Inc. | — | 2026-04-19 16:50 | 2026-04-20 08:56 | 0 | 0 | — | — |
57.144.180.141 |
IPv4 | — | — | US | New York | AS32934 Facebook, Inc. | — | 2026-04-19 16:50 | 2026-04-20 08:56 | 0 | 0 | — | — |
173.252.87.251 |
IPv4 |
smtpin.vvv.facebook.com
|
— | — | — | — | — | 2026-04-20 04:48 | 2026-04-20 04:48 | 0 | 0 | — | — |
2a03:2880:f003:c07:face:b00c:0:2 |
IPv6 |
edge-star6-shv-01-iad3.facebook.com
|
2a03:2880:f003::/48
|
US | Ashburn | AS32934 Facebook, Inc. | Clean | 2026-04-20 03:43 | 2026-04-20 03:43 | 0 | 0 | — | — |
31.13.66.4 |
IPv4 |
edge-star-shv-01-iad3.facebook.com
|
31.13.66.0/24
|
US | Ashburn | AS32934 Facebook, Inc. | Clean | 2026-04-19 22:33 | 2026-04-20 03:43 | 0 | 0 | — | — |
31.13.71.1 |
IPv4 | — | — | US | New York | AS32934 Facebook, Inc. | — | 2026-04-19 17:59 | 2026-04-19 18:47 | 0 | 0 | — | — |
2a03:2880:f012:1:face:b00c:0:1 |
IPv6 | — | — | US | New York | AS32934 Facebook, Inc. | — | 2026-04-19 17:17 | 2026-04-19 17:59 | 0 | 0 | — | — |
Technology
Technology Stack
1 detected
HTTP/2
HTTP/3 (QUIC)
1
Technologies
Email
1
SPF Record
TXT SPF: v=spf1 include:facebookmail.com -all
Technology Provider
2 tech · 2 sites
This domain provides technology used by other monitored sites.
Facebook SDK
Meta/Facebook
adobe.com
ahrefs.com
airtable.com
amazon.com
atlassian.com
calendly.com
canva.com
cargo.site
cisco.com
ckeditor.com
clerk.com
clickup.com
cloud.google.com
cloudflare.com
customer.io
descope.com
detectify.com
docusign.com
drip.com
facebook.com
fastly.com
github.com
globalsign.com
google.com
intercom.com
ionicframework.com
kinsta.com
launchdarkly.com
lu.ma
mailchimp.com
mailerlite.com
marketo.com
medium.com
microsoft.com
name.com
namecheap.com
netflix.com
nolt.io
notion.so
optimizely.com
patreon.com
pendo.io
pinterest.com
porkbun.com
prestashop.com
sanity.io
sendgrid.com
shopify.com
sleeknote.com
smartsheet.com
spotify.com
squareup.com
stripe.com
transifex.com
twilio.com
vimeo.com
webflow.com
weglot.com
workplace.com
wpengine.com
wrike.com
yandex.com
yoast.com
youtube.com
zapier.com
zoom.us
zoominfo.com
Discovery
Discovered Sub-domains
1
Wordlist Brute-force
1
| Subdomain | Source | Status | Code | Response | IPs | Last Checked |
|---|---|---|---|---|---|---|
www.developers.facebook.com |
Wordlist Brute-force | Pending | — | — | — | Never |