yjs.dev
B
24 hours
100.00%
7 days
100.00%
30 days
100.00%
IPv4 / IPv6
1
0
SSL Certificate
39d
Security Headers
1/6
Status Badges
Click any snippet to copy. Use Markdown for GitHub READMEs, HTML for websites.
| Badge | Markdown | HTML |
|---|---|---|
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/status.svg" alt="Status"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/uptime.svg" alt="Uptime"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/response-time.svg" alt="Response Time"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/ssl.svg" alt="SSL"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/cwv.svg" alt="Performance"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/cwv.svg?category=accessibility" alt="Accessibility"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/cwv.svg?category=seo" alt="SEO"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/security-headers.svg" alt="Security Headers"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/uptime.svg?period=24h" alt="Uptime 24h"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/incidents.svg" alt="Incidents"></a> |
|
[](https://updown.website/site/yjs.dev/) |
<a href="https://updown.website/site/yjs.dev/"><img src="https://updown.website/badge/yjs.dev/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
8
Success Rate
100%
Avg Response
4361 ms
Min / Max
97
/
5424 ms
Recent Checks
16:37
10:00
| Time | Status | Code | Response | Agent | Error |
|---|---|---|---|---|---|
| 10:00:23 | UP | 200 | 4425 ms | prod-local | — |
| 08:38:10 | UP | 200 | 4456 ms | prod-local | — |
| 05:22:07 | UP | 200 | 5213 ms | prod-local | — |
| 02:41:20 | UP | 200 | 5108 ms | prod-local | — |
| 01:18:51 | UP | 200 | 5071 ms | prod-local | — |
| 22:51:08 | UP | 200 | 5424 ms | prod-local | — |
| 17:46:46 | UP | 200 | 97 ms | prod-local | — |
| 16:37:10 | UP | 200 | 5095 ms | prod-local | — |
Incident History
No incidents recorded — all clear!
Service Checks (Banner Grab)
No service checks yet. The agent will banner-grab discovered open ports on the next deep cycle.
Security
SSL / TLS Certificate
39
days left
Valid
Mar 2, 2026
May 31, 2026
Issued → Expires
| Subject | commonName=yjs.dev |
|---|---|
| Issuer | countryName=US, organizationName=Let's Encrypt, commonName=R12 |
| Valid From | 2026-03-02 16:50 |
| Expires | 2026-05-31 16:50 |
| Serial Number | 0690F94C314D63105D6DC8660F7B210793BD |
| SHA-256 Fingerprint | 76:62:ed:30:62:5e:f5:a2:dc:31:99:5c:15:97:a7:ec:15:6b:a2:5c:11:c6:50:e7:a8:ad:7e:c1:6b:f7:a4:c0 |
| Subject Alt Names | yjs.dev |
| Last Checked | 2026-04-22 10:00:24 |
Latest HTTP Response Details
| Final URL | https://yjs.dev/ |
|---|---|
| Status Code | 200 |
| Response Time | 4425 ms |
| Content Size | 286 KB (285.8 KB) |
| Content Type | text/html; charset=utf-8 |
| Server | Vercel |
| TLS Version | TLSv1.3 |
|---|---|
| TLS Cipher | TLS_AES_128_GCM_SHA256 |
| Redirects | 0 |
| Checked | 2026-04-22 10:00:23 |
Security Headers
1/6
| Header | Status | Value |
|---|---|---|
Strict-Transport-Security |
Present | max-age=63072000 |
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
DMARC
BIMI
MTA-STS
Weak
Overall
DNS & Network
DNS Intelligence (24h)
Avg Resolution
32.0 ms
Min / Max
9.6
/
54.5 ms
Record Types
3
Lookups (24h)
32
DNS Records
A
76.76.21.21
3600s
41.4ms
NS
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
3600s
26.1ms
SOA
Primary NS
dns1.p04.nsone.net
Admin
hostmaster@nsone.net
Serial: 1662067868
Refresh: 12h
Retry: 2h
Expire: 14d
Min TTL: 1h
3600s
25.0ms
Resolution Time (A/AAAA recent)
01:18
10:00
| Time | Type | Values | TTL | Resolution | Nameserver |
|---|---|---|---|---|---|
| 10:00:23 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 25.0 ms | 10.89.0.1 |
| 10:00:23 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 26.1 ms | 10.89.0.1 |
| 10:00:23 | AAAA | — | — | 26.6 ms | — |
| 10:00:23 | A |
76.76.21.21
|
3600s | 41.4 ms | 10.89.0.1 |
| 08:38:10 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 12.4 ms | 10.89.0.1 |
| 08:38:10 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 10.9 ms | 10.89.0.1 |
| 08:38:10 | AAAA | — | — | 43.1 ms | — |
| 08:38:10 | A |
76.76.21.21
|
3600s | 40.1 ms | 10.89.0.1 |
| 05:22:07 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 17.1 ms | 10.89.0.1 |
| 05:22:07 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 13.8 ms | 10.89.0.1 |
| 05:22:07 | AAAA | — | — | 24.9 ms | — |
| 05:22:07 | A |
76.76.21.21
|
3600s | 41.9 ms | 10.89.0.1 |
| 02:41:20 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 10.3 ms | 10.89.0.1 |
| 02:41:20 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 27.3 ms | 10.89.0.1 |
| 02:41:20 | AAAA | — | — | 24.5 ms | — |
| 02:41:20 | A |
76.76.21.21
|
3600s | 9.6 ms | 10.89.0.1 |
| 01:18:51 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 25.1 ms | 10.89.0.1 |
| 01:18:51 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 24.9 ms | 10.89.0.1 |
| 01:18:51 | AAAA | — | — | 30.9 ms | — |
| 01:18:51 | A |
76.76.21.21
|
3600s | 25.5 ms | 10.89.0.1 |
| 22:51:07 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 11.2 ms | 10.89.0.1 |
| 22:51:07 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 11.8 ms | 10.89.0.1 |
| 22:51:07 | AAAA | — | — | 29.7 ms | — |
| 22:51:07 | A |
76.76.21.21
|
3600s | 28.5 ms | 10.89.0.1 |
| 17:46:45 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 12.5 ms | 10.89.0.1 |
| 17:46:45 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 36.3 ms | 10.89.0.1 |
| 17:46:45 | AAAA | — | — | 45.3 ms | — |
| 17:46:45 | A |
76.76.21.21
|
3600s | 54.5 ms | 10.89.0.1 |
| 16:37:09 | SOA |
dns1.p04.nsone.net hostmaster.nsone.net 1662067868 43200 7200 1209600 3600
|
3600s | 27.2 ms | 10.89.0.1 |
| 16:37:09 | NS |
dns1.p04.nsone.net
dns2.p04.nsone.net
dns3.p04.nsone.net
dns4.p04.nsone.net
|
3600s | 11.5 ms | 10.89.0.1 |
| 16:37:09 | AAAA | — | — | 12.0 ms | — |
| 16:37:09 | A |
76.76.21.21
|
3600s | 34.0 ms | 10.89.0.1 |
Open Ports
No open ports detected yet, or scan hasn't completed.
Active IP Addresses
| IP Address | Version | Reverse DNS | CIDR | Country | City | ASN | Reputation | First Seen | Last DNS | Hits | Misses | Uptime % | Avg Latency |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
76.76.21.21 |
IPv4 | — | — | US | Walnut | AS16509 Amazon.com, Inc. | — | 2026-04-19 16:47 | 2026-04-22 10:00 | 8 | 0 | 100.0% | 3.3 ms |
Technology
Technology Stack
10 detected
HTTP/2
HTTP/3 (QUIC)
10
Technologies
API
1
Public CORS API
CORS wildcard origin
DNS
1
NS record: dns1.p04.nsone.net
Framework
1
Next.js build path
Productivity
1
ClickUp embed
Service
1
Liveblocks collab
Technology Provider
1 tech · 1 sites
This domain provides technology used by other monitored sites.
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mail.yandex.com
mailchimp.com
medium.com
namecheap.com
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paypal.com
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spotify.com
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Discovery
Discovered Sub-domains
4
Link Scan
4
| Subdomain | Source | Status | Code | Response | IPs | Last Checked |
|---|---|---|---|---|---|---|
discuss.yjs.dev |
Link Scan | UP | 200 | 834 ms |
2a03:b0c0:3:d0::d43:d001
|
2 days, 12 hours ago |
docs.yjs.dev |
Link Scan | UP | 200 | 145 ms |
2606:4700:4407::6812:282f,
2606:4700:4402::ac40:93d1
|
1 day, 22 hours ago |
inspector.yjs.dev |
Link Scan | UP | 200 | 528 ms |
2600:1f18:16e:df01::258,
2600:1f18:16e:df01::259
|
2 days, 12 hours ago |
learn.yjs.dev |
Link Scan | UP | 200 | 84 ms | — | 2 days, 12 hours ago |