mermaid.js.org
B
24 hours
100.00%
7 days
100.00%
30 days
100.00%
IPv4 / IPv6
4
4
SSL Certificate
35d
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/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/status.svg" alt="Status"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/uptime.svg" alt="Uptime"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/response-time.svg" alt="Response Time"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/ssl.svg" alt="SSL"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/cwv.svg" alt="Performance"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/cwv.svg?category=accessibility" alt="Accessibility"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/cwv.svg?category=seo" alt="SEO"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/security-headers.svg" alt="Security Headers"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/uptime.svg?period=24h" alt="Uptime 24h"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/incidents.svg" alt="Incidents"></a> |
|
[](https://updown.website/site/mermaid.js.org/) |
<a href="https://updown.website/site/mermaid.js.org/"><img src="https://updown.website/badge/mermaid.js.org/ipv46.svg" alt="IPv4/IPv6"></a> |
Site Health (24 h)
HTTP Response
DNS Lookup
Ping
Up
Down
Reports
Incident
Monitoring
Recent HTTP Checks (24 h)
Total Checks
9
Success Rate
100%
Avg Response
3126 ms
Min / Max
41
/
5980 ms
Recent Checks
12:05
10:59
| Time | Status | Code | Response | Agent | Error |
|---|---|---|---|---|---|
| 10:59:18 | UP | 200 | 41 ms | prod-local | — |
| 08:58:31 | UP | 200 | 4006 ms | prod-local | — |
| 05:36:50 | UP | 200 | 4453 ms | prod-local | — |
| 03:19:48 | UP | 200 | 41 ms | prod-local | — |
| 01:25:39 | UP | 200 | 5980 ms | prod-local | — |
| 22:58:14 | UP | 200 | 4314 ms | prod-local | — |
| 17:53:48 | UP | 200 | 4074 ms | prod-local | — |
| 16:44:24 | UP | 200 | 5171 ms | prod-local | — |
| 12:05:45 | UP | 200 | 50 ms | prod-local | — |
Incident History
No incidents recorded — all clear!
Service Checks (Banner Grab)
2 up
0 down
| Status | Port | Service | Version | IP | Banner | Latency | Checked |
|---|---|---|---|---|---|---|---|
80 |
http | GitHub.com | 2606:50c0:8000::153 |
HTTP/1.1 200 OK Connection: close Content-Length: 174478 Server: GitHub.com … | 1.8 ms | 18 hours, 5 minutes ago | |
443 |
https | — | 2606:50c0:8000::153 |
— | 504.0 ms | 18 hours, 5 minutes ago |
Security
SSL / TLS Certificate
35
days left
Valid
Feb 26, 2026
May 27, 2026
Issued → Expires
| Subject | commonName=mermaid.js.org |
|---|---|
| Issuer | countryName=US, organizationName=Let's Encrypt, commonName=R13 |
| Valid From | 2026-02-26 18:22 |
| Expires | 2026-05-27 18:22 |
| Serial Number | 06CA082F8AB99BB672AB8BBFA7E08BDD83E6 |
| SHA-256 Fingerprint | e0:50:1a:99:c3:41:19:11:3c:a2:fe:16:ad:2d:d4:f3:df:59:5a:71:7c:0f:63:db:2a:f4:9b:81:67:97:e6:82 |
| Subject Alt Names | mermaid.js.org |
| Last Checked | 2026-04-22 10:59:18 |
Latest HTTP Response Details
| Final URL | https://mermaid.js.org/ |
|---|---|
| Status Code | 200 |
| Response Time | 41 ms |
| Content Size | 170 KB (170.4 KB) |
| Content Type | text/html; charset=utf-8 |
| Server | GitHub.com |
| TLS Version | TLSv1.3 |
|---|---|
| TLS Cipher | TLS_AES_128_GCM_SHA256 |
| Redirects | 0 |
| Checked | 2026-04-22 10:59:18 |
Security Headers
0/6
| Header | Status | Value |
|---|---|---|
Strict-Transport-Security |
Missing | — |
Content-Security-Policy |
Missing | — |
X-Frame-Options |
Missing | — |
X-Content-Type-Options |
Missing | — |
Referrer-Policy |
Missing | — |
Permissions-Policy |
Missing | — |
Email Security Posture
MX Records
SPF
Details
v=spf1 include:spf.migadu.com -all
DMARC
Details
v=DMARC1; p=quarantine;
BIMI
MTA-STS
Strong
Overall
DNS & Network
DNS Intelligence (24h)
Avg Resolution
19.5 ms
Min / Max
7.0
/
33.9 ms
Record Types
8
Lookups (24h)
84
DNS Records
A
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
3600s
25.1ms
AAAA
2606:50c0:8000::153
2606:50c0:8003::153
2606:50c0:8002::153
2606:50c0:8001::153
3600s
33.9ms
MX
| 10 | aspmx1.migadu.com |
| 20 | aspmx2.migadu.com |
3600s
22.5ms
NS
dns1.p04.nsone.net
dns4.p04.nsone.net
dns3.p04.nsone.net
dns2.p04.nsone.net
3600s
19.1ms
TXT
SPF
(1)
v=spf1 include:spf.migadu.com -all
Domain Verification
(2)
google-site-verification=UZ5bhICM7BWfGVb2HzX5s9Ih7iDMba6Oovc_-uO4VF4
hosted-email-verify=lmpn4w1i
3600s
21.2ms
CNAME
mermaid-js.github.io
299s
1.8ms
CAA
| Flag | Tag | Value |
|---|---|---|
| 0 | issue | digicert.com |
| 0 | issue | letsencrypt.org |
| 0 | issue | sectigo.com |
| 0 | issuewild | digicert.com |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | sectigo.com |
3600s
13.2ms
PTR
cdn-185-199-111-153.github.com
984s
0.7ms
DNS Propagation Consistent
| Resolver | IPs Returned | Response Time | Status |
|---|---|---|---|
| Quad9 |
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
|
15.7ms | |
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
|
13.77ms | ||
| AdGuard |
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
|
21.11ms | |
| OpenDNS |
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
|
34.43ms | |
| Cloudflare |
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
|
18.74ms |
WHOIS / Domain Registration
DNSSEC
—
WHOIS Last Checked
2026-04-22 10:59
Resolution Time (A/AAAA recent)
01:25
10:59
| Time | Type | Values | TTL | Resolution | Nameserver |
|---|---|---|---|---|---|
| 10:59:17 | PTR |
185.199.111.153
|
984s | 0.7 ms | — |
| 10:59:17 | PTR |
185.199.110.153
|
2793s | 0.8 ms | — |
| 10:59:17 | PTR |
185.199.109.153
|
365s | 0.7 ms | — |
| 10:59:17 | PTR |
185.199.108.153
|
1658s | 0.8 ms | — |
| 10:59:17 | CAA |
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 issue "sectigo.com"
0 issuewild "digicert.com"
0 issuewild "letsencrypt.org"
0 issuewild "sectigo.com"
|
3600s | 13.2 ms | 10.89.0.1 |
| 10:59:17 | CNAME |
mermaid-js.github.io
|
299s | 1.8 ms | 10.89.0.1 |
| 10:59:17 | AAAA |
2606:50c0:8000::153
2606:50c0:8003::153
2606:50c0:8002::153
2606:50c0:8001::153
|
3600s | 33.9 ms | 10.89.0.1 |
| 10:59:17 | A |
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
|
3600s | 25.1 ms | 10.89.0.1 |
| 08:58:31 | PTR |
185.199.111.153
|
2120s | 0.8 ms | — |
| 08:58:31 | PTR |
185.199.110.153
|
2120s | 0.8 ms | — |
| 08:58:31 | PTR |
185.199.109.153
|
1134s | 3.6 ms | — |
| 08:58:31 | PTR |
185.199.108.153
|
3399s | 1.0 ms | — |
| 08:58:31 | CAA |
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 issue "sectigo.com"
0 issuewild "digicert.com"
0 issuewild "letsencrypt.org"
0 issuewild "sectigo.com"
|
3600s | 18.5 ms | 10.89.0.1 |
| 08:58:31 | CNAME |
mermaid-js.github.io
|
300s | 10.8 ms | 10.89.0.1 |
| 08:58:31 | TXT |
google-site-verification=UZ5bhICM7BWfGVb2HzX5s9Ih7iDMba6Oovc_-uO4VF4
v=spf1 include:spf.migadu.com -all
hosted-email-verify=lmpn4w1i
|
3600s | 21.2 ms | 10.89.0.1 |
| 08:58:31 | NS |
dns1.p04.nsone.net
dns4.p04.nsone.net
dns3.p04.nsone.net
dns2.p04.nsone.net
|
3600s | 19.1 ms | 10.89.0.1 |
| 08:58:31 | MX |
20 aspmx2.migadu.com
10 aspmx1.migadu.com
|
3600s | 22.5 ms | 10.89.0.1 |
| 08:58:31 | AAAA |
2606:50c0:8001::153
2606:50c0:8000::153
2606:50c0:8003::153
2606:50c0:8002::153
|
3600s | 12.0 ms | 10.89.0.1 |
| 08:58:31 | A |
185.199.109.153
185.199.108.153
185.199.111.153
185.199.110.153
|
3600s | 25.0 ms | 10.89.0.1 |
| 05:36:50 | PTR |
185.199.111.153
|
2038s | 0.8 ms | — |
| 05:36:50 | PTR |
185.199.110.153
|
3399s | 0.7 ms | — |
| 05:36:50 | PTR |
185.199.109.153
|
3399s | 0.8 ms | — |
| 05:36:50 | PTR |
185.199.108.153
|
2737s | 0.9 ms | — |
| 05:36:50 | CAA |
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 issue "sectigo.com"
0 issuewild "digicert.com"
0 issuewild "letsencrypt.org"
0 issuewild "sectigo.com"
|
3600s | 18.5 ms | 10.89.0.1 |
| 05:36:50 | CNAME |
mermaid-js.github.io
|
300s | 11.9 ms | 10.89.0.1 |
| 05:36:50 | TXT |
google-site-verification=UZ5bhICM7BWfGVb2HzX5s9Ih7iDMba6Oovc_-uO4VF4
v=spf1 include:spf.migadu.com -all
hosted-email-verify=lmpn4w1i
|
3600s | 13.2 ms | 10.89.0.1 |
| 05:36:50 | NS |
dns1.p04.nsone.net
dns4.p04.nsone.net
dns3.p04.nsone.net
dns2.p04.nsone.net
|
3600s | 21.2 ms | 10.89.0.1 |
| 05:36:50 | MX |
20 aspmx2.migadu.com
10 aspmx1.migadu.com
|
3600s | 22.2 ms | 10.89.0.1 |
| 05:36:50 | AAAA |
2606:50c0:8000::153
2606:50c0:8001::153
2606:50c0:8002::153
2606:50c0:8003::153
|
3600s | 12.7 ms | 10.89.0.1 |
| 05:36:50 | A |
185.199.109.153
185.199.111.153
185.199.110.153
185.199.108.153
|
3600s | 23.1 ms | 10.89.0.1 |
| 03:19:48 | PTR |
185.199.111.153
|
1233s | 0.8 ms | — |
| 03:19:48 | PTR |
185.199.110.153
|
576s | 0.7 ms | — |
| 03:19:48 | PTR |
185.199.109.153
|
34s | 0.8 ms | — |
| 03:19:48 | PTR |
185.199.108.153
|
576s | 0.8 ms | — |
| 03:19:48 | CAA |
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 issue "sectigo.com"
0 issuewild "digicert.com"
0 issuewild "letsencrypt.org"
0 issuewild "sectigo.com"
|
3600s | 13.9 ms | 10.89.0.1 |
| 03:19:48 | CNAME |
mermaid-js.github.io
|
288s | 1.3 ms | 10.89.0.1 |
| 03:19:48 | AAAA |
2606:50c0:8000::153
2606:50c0:8001::153
2606:50c0:8002::153
2606:50c0:8003::153
|
3600s | 13.1 ms | 10.89.0.1 |
| 03:19:48 | A |
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
|
3589s | 7.0 ms | 10.89.0.1 |
| 01:25:39 | PTR |
185.199.111.153
|
1335s | 1.0 ms | — |
| 01:25:39 | PTR |
185.199.110.153
|
3421s | 0.9 ms | — |
| 01:25:39 | PTR |
185.199.109.153
|
2774s | 0.9 ms | — |
| 01:25:39 | PTR |
185.199.108.153
|
3421s | 1.0 ms | — |
| 01:25:39 | CAA |
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 issue "sectigo.com"
0 issuewild "digicert.com"
0 issuewild "letsencrypt.org"
0 issuewild "sectigo.com"
|
3600s | 18.3 ms | 10.89.0.1 |
| 01:25:39 | CNAME |
mermaid-js.github.io
|
300s | 11.7 ms | 10.89.0.1 |
| 01:25:39 | TXT |
google-site-verification=UZ5bhICM7BWfGVb2HzX5s9Ih7iDMba6Oovc_-uO4VF4
v=spf1 include:spf.migadu.com -all
hosted-email-verify=lmpn4w1i
|
3600s | 21.7 ms | 10.89.0.1 |
| 01:25:39 | NS |
dns1.p04.nsone.net
dns4.p04.nsone.net
dns3.p04.nsone.net
dns2.p04.nsone.net
|
3600s | 11.3 ms | 10.89.0.1 |
| 01:25:39 | MX |
20 aspmx2.migadu.com
10 aspmx1.migadu.com
|
3600s | 22.9 ms | 10.89.0.1 |
| 01:25:39 | AAAA |
2606:50c0:8000::153
2606:50c0:8001::153
2606:50c0:8002::153
2606:50c0:8003::153
|
3600s | 11.0 ms | 10.89.0.1 |
| 01:25:39 | A |
185.199.111.153
185.199.110.153
185.199.109.153
185.199.108.153
|
3600s | 26.8 ms | 10.89.0.1 |
| 22:58:13 | PTR |
185.199.111.153
|
1665s | 0.7 ms | — |
Open Ports
6
Open Ports
6
IPs Scanned
6
| Port | Protocol | Service | IP Address | Status | Latency | Banner |
|---|---|---|---|---|---|---|
80 |
TCP | http | 185.199.110.153 |
Open | 55.5 ms | — |
80 |
TCP | http | 185.199.108.153 |
Open | 85.2 ms | — |
80 |
TCP | http | 2606:50c0:8000::153 |
Open | 2.3 ms | — |
443 |
TCP | https | 2606:50c0:8000::153 |
Open | 1.7 ms | — |
443 |
TCP | https | 185.199.110.153 |
Open | 1016.3 ms | — |
443 |
TCP | https | 185.199.108.153 |
Open | 1.7 ms | — |
Active IP Addresses
| IP Address | Version | Reverse DNS | CIDR | Country | City | ASN | Reputation | First Seen | Last DNS | Hits | Misses | Uptime % | Avg Latency |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2606:50c0:8002::153 |
IPv6 | — |
2606:50c0:8002::/48
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 7.0 ms |
2606:50c0:8001::153 |
IPv6 | — |
2606:50c0:8001::/48
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 6.9 ms |
2606:50c0:8003::153 |
IPv6 | — |
2606:50c0:8003::/48
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 6.7 ms |
2606:50c0:8000::153 |
IPv6 | — |
2606:50c0:8000::/48
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 6.8 ms |
185.199.109.153 |
IPv4 |
cdn-185-199-109-153.github.com
|
185.199.109.0/24
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 6.3 ms |
185.199.108.153 |
IPv4 |
cdn-185-199-108-153.github.com
|
185.199.108.0/24
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 6.9 ms |
185.199.110.153 |
IPv4 |
cdn-185-199-110-153.github.com
|
185.199.110.0/24
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 6.6 ms |
185.199.111.153 |
IPv4 |
cdn-185-199-111-153.github.com
|
185.199.111.0/24
|
US | — | AS54113 Fastly, Inc. | Clean | 2026-04-19 19:11 | 2026-04-22 10:59 | 9 | 0 | 100.0% | 6.7 ms |
Technology
Technology Stack
14 detected
HTTP/2
HTTP/3 (QUIC)
14
Technologies
API
1
Public CORS API
CORS wildcard origin
CDN
1
X-Served-By header
Cache
2
DNS
1
NS record: dns1.p04.nsone.net
Documentation
1
VitePress
Email
2
MX record: 20 aspmx2.migadu.com
SPF Record
TXT SPF: v=spf1 include:spf.migadu.com -all
Platform
1
X-GitHub-Request-Id header
Service
1
DocSearch by Algolia
Social
1
Open Graph meta tags
Verification
1
TXT verification: google-site-verification=UZ5bhICM7BWfGVb2HzX5s9Ih7iDMba6Oovc_…
Technology Provider
1 tech · 1 sites
This domain provides technology used by other monitored sites.
Mermaid
Discovery
Discovered Sub-domains
No sub-domains discovered yet. The agent discovers sub-domains via certificate transparency logs and homepage link scanning.