svelte.dev B

24 hours
100.00%
7 days
100.00%
30 days
100.00%
IPv4 / IPv6
1 0
SSL Certificate
84d
Security Headers
0/6
Status Badges
Status Uptime 30d Uptime 7d Response Time SSL Performance Accessibility SEO Security Headers Uptime 24h Incidents IPv4/IPv6
Click any snippet to copy. Use Markdown for GitHub READMEs, HTML for websites.
Badge Markdown HTML
Status [![Status](https://updown.website/badge/svelte.dev/status.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/status.svg" alt="Status"></a>
Uptime [![Uptime](https://updown.website/badge/svelte.dev/uptime.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/uptime.svg" alt="Uptime"></a>
Response Time [![Response Time](https://updown.website/badge/svelte.dev/response-time.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/response-time.svg" alt="Response Time"></a>
SSL [![SSL](https://updown.website/badge/svelte.dev/ssl.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/ssl.svg" alt="SSL"></a>
Performance [![Performance](https://updown.website/badge/svelte.dev/cwv.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/cwv.svg" alt="Performance"></a>
Accessibility [![Accessibility](https://updown.website/badge/svelte.dev/cwv.svg?category=accessibility)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/cwv.svg?category=accessibility" alt="Accessibility"></a>
SEO [![SEO](https://updown.website/badge/svelte.dev/cwv.svg?category=seo)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/cwv.svg?category=seo" alt="SEO"></a>
Security Headers [![Security Headers](https://updown.website/badge/svelte.dev/security-headers.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/security-headers.svg" alt="Security Headers"></a>
Uptime 24h [![Uptime 24h](https://updown.website/badge/svelte.dev/uptime.svg?period=24h)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/uptime.svg?period=24h" alt="Uptime 24h"></a>
Incidents [![Incidents](https://updown.website/badge/svelte.dev/incidents.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.dev/incidents.svg" alt="Incidents"></a>
IPv4/IPv6 [![IPv4/IPv6](https://updown.website/badge/svelte.dev/ipv46.svg)](https://updown.website/site/svelte.dev/) <a href="https://updown.website/site/svelte.dev/"><img src="https://updown.website/badge/svelte.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
2933 ms
Min / Max
75 / 7476 ms
Recent Checks
16:10 09:26
Time Status Code Response Agent Error
09:26:25 UP 200 7476 ms prod-local —
07:06:30 UP 200 78 ms prod-local —
05:06:10 UP 200 76 ms prod-local —
02:24:12 UP 200 92 ms prod-local —
00:54:56 UP 200 75 ms prod-local —
21:59:27 UP 200 5289 ms prod-local —
17:20:09 UP 200 5064 ms prod-local —
16:10:37 UP 200 5316 ms prod-local —
Incident History

No incidents recorded — all clear!

Community
0
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Service Checks (Banner Grab)
2 up 0 down
Status Port Service Version IP Banner Latency Checked
80 http Vercel 76.76.21.123 HTTP/1.0 308 Permanent Redirect Content-Type: text/plain Location: https://sv… 1.4 ms 2 hours, 23 minutes ago
443 https — 76.76.21.123 — 502.7 ms 2 hours, 23 minutes ago
Security
SSL / TLS Certificate
84
days left
Valid
Apr 16, 2026 Jul 15, 2026
Issued → Expires
Subject commonName=svelte.dev
Issuer countryName=US, organizationName=Let's Encrypt, commonName=R12
Valid From 2026-04-16 15:39
Expires 2026-07-15 15:39
Serial Number 06DDD692C13E7B2D9B26933EA4328B241A1C
SHA-256 Fingerprint 6a:6c:6f:fa:9b:7b:63:62:9f:cf:ae:b6:fa:fc:d3:5b:11:a0:2e:73:e7:ef:bf:03:34:fb:4c:e1:58:07:d5:5c
Subject Alt Names svelte.dev
Last Checked 2026-04-22 09:26:25
Latest HTTP Response Details
Final URL https://svelte.dev/
Status Code 200
Response Time 7476 ms
Content Size 87 KB (87.5 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 09:26:25
Email Security Posture
MX Records
SPF
Details v=spf1 include:spf.messagingengine.com ?all
DMARC
BIMI
MTA-STS
Partial
Overall
DNS & Network
DNS Intelligence (24h)
Avg Resolution
11.9 ms
Min / Max
4.2 / 29.0 ms
Record Types
5
Lookups (24h)
48
DNS Records
A
76.76.21.123
300s 4.2ms
MX
10 in1-smtp.messagingengine.com
20 in2-smtp.messagingengine.com
300s 5.7ms
NS
cody.ns.cloudflare.com jean.ns.cloudflare.com
86400s 5.0ms
TXT
SPF (1)
v=spf1 include:spf.messagingengine.com ?all
MCP (1)
v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs=
Domain Verification (3)
google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk
google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc
google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc
300s 5.9ms
SOA
Primary NS
cody.ns.cloudflare.com
Admin
dns@cloudflare.com
Serial: 2398578505 Refresh: 2h Retry: 40m Expire: 7d Min TTL: 30m
1800s 3.6ms
DNS Propagation Consistent
Resolver IPs Returned Response Time Status
Quad9 76.76.21.123 18.41ms
Google 76.76.21.123 18.96ms
AdGuard 76.76.21.123 60.77ms
OpenDNS 76.76.21.123 30.99ms
Cloudflare 76.76.21.123 4.66ms
WHOIS / Domain Registration
DNSSEC
—
WHOIS Last Checked
2026-04-20 19:03
Resolution Time (A/AAAA recent)
00:54 09:26
Time Type Values TTL Resolution Nameserver
09:26:24 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 3.6 ms 10.89.0.1
09:26:24 TXT
5 records google-site-verification=3c77ak7h3H3q50wfkn4wWqPB…
google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= v=spf1 include:spf.messagingengine.com ?all
300s 5.9 ms 10.89.0.1
09:26:24 NS cody.ns.cloudflare.com jean.ns.cloudflare.com 86400s 5.0 ms 10.89.0.1
09:26:24 MX 10 in1-smtp.messagingengine.com 20 in2-smtp.messagingengine.com 300s 5.7 ms 10.89.0.1
09:26:24 AAAA — — 4.5 ms —
09:26:24 A 76.76.21.123 300s 4.2 ms 10.89.0.1
07:06:30 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 4.5 ms 10.89.0.1
07:06:30 TXT
5 records google-site-verification=3c77ak7h3H3q50wfkn4wWqPB…
google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= v=spf1 include:spf.messagingengine.com ?all
300s 5.1 ms 10.89.0.1
07:06:30 NS cody.ns.cloudflare.com jean.ns.cloudflare.com 86400s 20.3 ms 10.89.0.1
07:06:30 MX 10 in1-smtp.messagingengine.com 20 in2-smtp.messagingengine.com 300s 5.6 ms 10.89.0.1
07:06:30 AAAA — — 4.6 ms —
07:06:30 A 76.76.21.123 300s 4.7 ms 10.89.0.1
05:06:10 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 20.7 ms 10.89.0.1
05:06:10 TXT
5 records google-site-verification=3c77ak7h3H3q50wfkn4wWqPB…
google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= v=spf1 include:spf.messagingengine.com ?all
300s 19.4 ms 10.89.0.1
05:06:10 NS cody.ns.cloudflare.com jean.ns.cloudflare.com 86400s 21.8 ms 10.89.0.1
05:06:10 MX 10 in1-smtp.messagingengine.com 20 in2-smtp.messagingengine.com 300s 5.0 ms 10.89.0.1
05:06:10 AAAA — — 4.7 ms —
05:06:10 A 76.76.21.123 300s 22.0 ms 10.89.0.1
02:24:11 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 18.3 ms 10.89.0.1
02:24:11 TXT
5 records v=spf1 include:spf.messagingengine.com ?all
v=spf1 include:spf.messagingengine.com ?all google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc
300s 20.9 ms 10.89.0.1
02:24:11 NS cody.ns.cloudflare.com jean.ns.cloudflare.com 21600s 17.9 ms 10.89.0.1
02:24:11 MX 20 in2-smtp.messagingengine.com 10 in1-smtp.messagingengine.com 300s 21.1 ms 10.89.0.1
02:24:11 AAAA — — 14.0 ms —
02:24:11 A 76.76.21.123 300s 20.1 ms 10.89.0.1
00:54:55 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 7.0 ms 10.89.0.1
00:54:55 TXT
5 records google-site-verification=3c77ak7h3H3q50wfkn4wWqPB…
google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= v=spf1 include:spf.messagingengine.com ?all
300s 8.8 ms 10.89.0.1
00:54:55 NS cody.ns.cloudflare.com jean.ns.cloudflare.com 86400s 4.7 ms 10.89.0.1
00:54:55 MX 10 in1-smtp.messagingengine.com 20 in2-smtp.messagingengine.com 300s 19.7 ms 10.89.0.1
00:54:55 AAAA — — 6.2 ms —
00:54:55 A 76.76.21.123 300s 21.8 ms 10.89.0.1
21:59:27 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 6.1 ms 10.89.0.1
21:59:27 TXT
5 records google-site-verification=3c77ak7h3H3q50wfkn4wWqPB…
google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= v=spf1 include:spf.messagingengine.com ?all
300s 20.0 ms 10.89.0.1
21:59:27 NS cody.ns.cloudflare.com jean.ns.cloudflare.com 86400s 6.0 ms 10.89.0.1
21:59:27 MX 10 in1-smtp.messagingengine.com 20 in2-smtp.messagingengine.com 300s 7.2 ms 10.89.0.1
21:59:27 AAAA — — 4.8 ms —
21:59:27 A 76.76.21.123 239s 4.8 ms 10.89.0.1
17:20:08 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 5.1 ms 10.89.0.1
17:20:08 TXT
5 records google-site-verification=3c77ak7h3H3q50wfkn4wWqPB…
google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= v=spf1 include:spf.messagingengine.com ?all
300s 6.6 ms 10.89.0.1
17:20:08 NS cody.ns.cloudflare.com jean.ns.cloudflare.com 86400s 6.1 ms 10.89.0.1
17:20:08 MX 10 in1-smtp.messagingengine.com 20 in2-smtp.messagingengine.com 300s 5.7 ms 10.89.0.1
17:20:08 AAAA — — 20.4 ms —
17:20:08 A 76.76.21.123 300s 29.0 ms 10.89.0.1
16:10:36 SOA cody.ns.cloudflare.com dns.cloudflare.com 2398578505 10000 2400 604800 1800 1800s 27.2 ms 10.89.0.1
16:10:36 TXT
5 records google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-i…
google-site-verification=DHZNw0pjrHLVyiT4ye8vsk-iXzPoEuVgZdrwdbflYnc google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UGS_2z2lk v=spf1 include:spf.messagingengine.com ?all v=MCPv1; k=ed25519; p=lLXgJJS2PJ0wSEX4XNtcNbE1A68dg4vZ+WaymedYEbs= google-site-verification=de9MMH-gUcDWFFQD3-tjD2nWdofR3UDSsaafUj9HVpc
300s 24.0 ms 10.89.0.1
16:10:36 NS jean.ns.cloudflare.com cody.ns.cloudflare.com 21600s 19.1 ms 10.89.0.1
16:10:36 MX 10 in1-smtp.messagingengine.com 20 in2-smtp.messagingengine.com 300s 30.3 ms 10.89.0.1
16:10:36 AAAA — — 7.8 ms —
16:10:36 A 76.76.21.123 300s 17.4 ms 10.89.0.1
Open Ports 2
Open Ports
2
IPs Scanned
2
Port Protocol Service IP Address Status Latency Banner
80 TCP http 76.76.21.123 Open 1.6 ms —
443 TCP https 76.76.21.123 Open 17.2 ms —
Active IP Addresses
IP Address Version Reverse DNS CIDR Country City ASN Reputation First Seen Last DNS Hits Misses Uptime % Avg Latency
76.76.21.123 IPv4 — 76.76.21.0/24 US Walnut AS16509 Amazon.com, Inc. Clean 2026-04-19 17:11 2026-04-22 09:26 8 0 100.0% 3.4 ms
Technology
Technology Stack 12 detected
HTTP/2
HTTP/3 (QUIC)
12
Technologies
API 1
Public CORS API
90%
CORS wildcard origin
CSS 1
70%
Tailwind CSS
DNS 1
85%
NS record: cody.ns.cloudflare.com
Email 1
SPF Record
85%
TXT SPF: v=spf1 include:spf.messagingengine.com ?all
Framework 2
70%
Svelte build artifacts
70%
SvelteKit identifier
Library 2
70%
Framer Motion
70%
Handsontable grid
Payment 1
70%
Open Collective
Platform 1
90%
X-Vercel-Id header
Social 1
70%
Twitter Card meta
Verification 1
85%
TXT verification: google-site-verification=3c77ak7h3H3q50wfkn4wWqPB81AwaP11l6UG…
Technology Provider 3 tech · 3 sites

This domain provides technology used by other monitored sites.

Sapper
rrweb.io sapper.svelte.dev
Svelte
astro.build dropzone.dev kit.svelte.dev launchdarkly.com rrweb.io sapper.svelte.dev strapi.io unocss.dev
SvelteKit
kit.svelte.dev
Discovery
Crawl Configuration
robots.txt No sitemap
robots.txt 
User-agent: *
Disallow:
Sitemap

No sitemap discovered.
Checked /robots.txt, /sitemap.xml, and /sitemap_index.xml

Discovered Sub-domains 15
Wordlist Brute-force 6 Certificate Transparency 9
Subdomain Source Status Code Response IPs Last Checked
api.svelte.dev Wordlist Brute-force Pending — — — Never
cloudflare.demo.svelte.dev Certificate Transparency Pending — — — Never
hn.svelte.dev Certificate Transparency UP 200 194 ms — 1 day, 7 hours ago
kit.svelte.dev Certificate Transparency Pending — — — Never
learn.svelte.dev Wordlist Brute-force UP 200 163 ms — 1 day, 7 hours ago
mcp.svelte.dev Certificate Transparency UP 200 221 ms — 1 day, 7 hours ago
netlify.demo.svelte.dev Certificate Transparency UP 200 117 ms 2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258 1 day, 7 hours ago
realworld.svelte.dev Certificate Transparency UP 200 702 ms — 1 day, 7 hours ago
ru.svelte.dev Wordlist Brute-force UP 200 158 ms — 1 day, 7 hours ago
sapper.svelte.dev Certificate Transparency Pending — — — Never
static.svelte.dev Wordlist Brute-force Pending — — — Never
todomvc.svelte.dev Certificate Transparency UP 200 190 ms — 1 day, 7 hours ago
v2.svelte.dev Wordlist Brute-force Pending — — — Never
v4.svelte.dev Certificate Transparency Pending — — — Never
www.svelte.dev Wordlist Brute-force Pending — — — Never