cached probe / public landing
DNS & SSL for markdownonline.app
Last probed 1 hour ago. Use "re-check now" to refresh.
probe.2026103104
probe result
/
markdownonline.app
cached 1 hour ago
· 3536ms
A
record
[OK] propagated
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | Cloudflare 2 | 1.0.0.1 |
172.67.136.15
104.21.46.69
|
0ms |
| [OK] | 8.8.8.8 |
104.21.46.69
172.67.136.15
|
0ms | |
| [OK] | Google 2 | 8.8.4.4 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | Quad9 | 9.9.9.9 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | OpenDNS | 208.67.222.222 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
104.21.46.69
172.67.136.15
|
77ms |
| [OK] | Yandex | 77.88.8.8 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | Comodo | 8.26.56.26 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | Verisign | 64.6.64.6 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | Hurricane Electric | 74.82.42.42 |
104.21.46.69
172.67.136.15
|
0ms |
| [OK] | AdGuard | 94.140.14.14 |
104.21.46.69
172.67.136.15
|
0ms |
AAAA
record
[OK] propagated
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 |
2606:4700:3037::ac43:880f
2606:4700:3031::6815:2e45
|
0ms |
| [OK] | Cloudflare 2 | 1.0.0.1 |
2606:4700:3037::ac43:880f
2606:4700:3031::6815:2e45
|
0ms |
| [OK] | 8.8.8.8 |
2606:4700:3037::ac43:880f
2606:4700:3031::6815:2e45
|
0ms | |
| [OK] | Google 2 | 8.8.4.4 |
2606:4700:3031::6815:2e45
2606:4700:3037::ac43:880f
|
0ms |
| [OK] | Quad9 | 9.9.9.9 |
2606:4700:3031::6815:2e45
2606:4700:3037::ac43:880f
|
0ms |
| [OK] | OpenDNS | 208.67.222.222 |
2606:4700:3031::6815:2e45
2606:4700:3037::ac43:880f
|
0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
2606:4700:3031::6815:2e45
2606:4700:3037::ac43:880f
|
0ms |
| [OK] | Yandex | 77.88.8.8 |
2606:4700:3031::6815:2e45
2606:4700:3037::ac43:880f
|
0ms |
| [OK] | Comodo | 8.26.56.26 |
2606:4700:3037::ac43:880f
2606:4700:3031::6815:2e45
|
0ms |
| [OK] | Verisign | 64.6.64.6 |
2606:4700:3037::ac43:880f
2606:4700:3031::6815:2e45
|
0ms |
| [OK] | Hurricane Electric | 74.82.42.42 |
2606:4700:3037::ac43:880f
2606:4700:3031::6815:2e45
|
0ms |
| [OK] | AdGuard | 94.140.14.14 |
2606:4700:3037::ac43:880f
2606:4700:3031::6815:2e45
|
0ms |
MX
record
[OK] propagated
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 |
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
81 route3.mx.cloudflare.net.
|
0ms |
| [OK] | Cloudflare 2 | 1.0.0.1 |
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
81 route3.mx.cloudflare.net.
|
0ms |
| [OK] | 8.8.8.8 |
78 route1.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
81 route3.mx.cloudflare.net.
|
0ms | |
| [OK] | Google 2 | 8.8.4.4 |
81 route3.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
|
0ms |
| [OK] | Quad9 | 9.9.9.9 |
78 route1.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
81 route3.mx.cloudflare.net.
|
0ms |
| [OK] | OpenDNS | 208.67.222.222 |
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
81 route3.mx.cloudflare.net.
|
0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
81 route3.mx.cloudflare.net.
|
17ms |
| [OK] | Yandex | 77.88.8.8 |
81 route3.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
|
0ms |
| [OK] | Comodo | 8.26.56.26 |
81 route3.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
|
0ms |
| [OK] | Verisign | 64.6.64.6 |
78 route1.mx.cloudflare.net.
81 route3.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
|
0ms |
| [OK] | Hurricane Electric | 74.82.42.42 |
81 route3.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
|
0ms |
| [OK] | AdGuard | 94.140.14.14 |
81 route3.mx.cloudflare.net.
71 route2.mx.cloudflare.net.
78 route1.mx.cloudflare.net.
|
0ms |
TXT
record
[WARN] partial
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 |
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
"v=spf1 include:_spf.mx.cloudflare.net ~all"
|
0ms |
| [OK] | Cloudflare 2 | 1.0.0.1 |
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
"v=spf1 include:_spf.mx.cloudflare.net ~all"
|
0ms |
| [OK] | 8.8.8.8 |
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
"v=spf1 include:_spf.mx.cloudflare.net ~all"
|
0ms | |
| [OK] | Google 2 | 8.8.4.4 |
"v=spf1 include:_spf.mx.cloudflare.net ~all"
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
|
0ms |
| [OK] | Quad9 | 9.9.9.9 |
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
"v=spf1 include:_spf.mx.cloudflare.net ~all"
|
0ms |
| [OK] | OpenDNS | 208.67.222.222 |
"v=spf1 include:_spf.mx.cloudflare.net ~all"
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
|
0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
;; communications error to 84.200.69.80#53: timed out
;; no servers could be reached
|
2873ms |
| [OK] | Yandex | 77.88.8.8 |
"v=spf1 include:_spf.mx.cloudflare.net ~all"
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
|
0ms |
| [OK] | Comodo | 8.26.56.26 |
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
"v=spf1 include:_spf.mx.cloudflare.net ~all"
|
0ms |
| [OK] | Verisign | 64.6.64.6 |
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
"v=spf1 include:_spf.mx.cloudflare.net ~all"
|
0ms |
| [OK] | Hurricane Electric | 74.82.42.42 |
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
"v=spf1 include:_spf.mx.cloudflare.net ~all"
|
0ms |
| [OK] | AdGuard | 94.140.14.14 |
"v=spf1 include:_spf.mx.cloudflare.net ~all"
"google-site-verification=OhtISZGU4hlTNn54bt683tLsA-otNLrq0GLCD-ipkts"
|
0ms |
NS
record
[WARN] partial
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 |
koa.ns.cloudflare.com.
nancy.ns.cloudflare.com.
|
0ms |
| [OK] | Cloudflare 2 | 1.0.0.1 |
koa.ns.cloudflare.com.
nancy.ns.cloudflare.com.
|
0ms |
| [OK] | 8.8.8.8 |
nancy.ns.cloudflare.com.
koa.ns.cloudflare.com.
|
0ms | |
| [OK] | Google 2 | 8.8.4.4 |
koa.ns.cloudflare.com.
nancy.ns.cloudflare.com.
|
0ms |
| [OK] | Quad9 | 9.9.9.9 |
koa.ns.cloudflare.com.
nancy.ns.cloudflare.com.
|
0ms |
| [OK] | OpenDNS | 208.67.222.222 |
koa.ns.cloudflare.com.
nancy.ns.cloudflare.com.
|
0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
;; communications error to 84.200.69.80#53: timed out
;; no servers could be reached
|
12ms |
| [OK] | Yandex | 77.88.8.8 |
nancy.ns.cloudflare.com.
koa.ns.cloudflare.com.
|
0ms |
| [OK] | Comodo | 8.26.56.26 |
nancy.ns.cloudflare.com.
koa.ns.cloudflare.com.
|
0ms |
| [OK] | Verisign | 64.6.64.6 |
nancy.ns.cloudflare.com.
koa.ns.cloudflare.com.
|
0ms |
| [OK] | Hurricane Electric | 74.82.42.42 |
koa.ns.cloudflare.com.
nancy.ns.cloudflare.com.
|
0ms |
| [OK] | AdGuard | 94.140.14.14 |
nancy.ns.cloudflare.com.
koa.ns.cloudflare.com.
|
0ms |
CNAME
record
[WARN] partial
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [--] | Cloudflare | 1.1.1.1 | — no answer | 0ms |
| [--] | Cloudflare 2 | 1.0.0.1 | — no answer | 0ms |
| [--] | 8.8.8.8 | — no answer | 0ms | |
| [--] | Google 2 | 8.8.4.4 | — no answer | 0ms |
| [--] | Quad9 | 9.9.9.9 | — no answer | 0ms |
| [--] | OpenDNS | 208.67.222.222 | — no answer | 0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
;; communications error to 84.200.69.80#53: timed out
;; no servers could be reached
|
0ms |
| [--] | Yandex | 77.88.8.8 | — no answer | 0ms |
| [--] | Comodo | 8.26.56.26 | — no answer | 0ms |
| [--] | Verisign | 64.6.64.6 | — no answer | 0ms |
| [--] | Hurricane Electric | 74.82.42.42 | — no answer | 0ms |
| [--] | AdGuard | 94.140.14.14 | — no answer | 0ms |
CAA
record
[WARN] partial
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [--] | Cloudflare | 1.1.1.1 | — no answer | 0ms |
| [--] | Cloudflare 2 | 1.0.0.1 | — no answer | 0ms |
| [--] | 8.8.8.8 | — no answer | 0ms | |
| [--] | Google 2 | 8.8.4.4 | — no answer | 0ms |
| [--] | Quad9 | 9.9.9.9 | — no answer | 0ms |
| [--] | OpenDNS | 208.67.222.222 | — no answer | 0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
;; communications error to 84.200.69.80#53: timed out
;; no servers could be reached
|
25ms |
| [--] | Yandex | 77.88.8.8 | — no answer | 0ms |
| [--] | Comodo | 8.26.56.26 | — no answer | 0ms |
| [--] | Verisign | 64.6.64.6 | — no answer | 0ms |
| [--] | Hurricane Electric | 74.82.42.42 | — no answer | 0ms |
| [--] | AdGuard | 94.140.14.14 | — no answer | 0ms |
SOA
record
[WARN] partial
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | Cloudflare 2 | 1.0.0.1 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | 8.8.8.8 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms | |
| [OK] | Google 2 | 8.8.4.4 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | Quad9 | 9.9.9.9 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | OpenDNS | 208.67.222.222 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
;; communications error to 84.200.69.80#53: timed out
;; no servers could be reached
|
18ms |
| [OK] | Yandex | 77.88.8.8 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | Comodo | 8.26.56.26 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | Verisign | 64.6.64.6 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | Hurricane Electric | 74.82.42.42 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
| [OK] | AdGuard | 94.140.14.14 |
koa.ns.cloudflare.com. dns.cloudflare.com. 2417877973 10000 2400 604800 1800
|
0ms |
PTR
record
[FAIL] missing
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [--] | Cloudflare | 1.1.1.1 | — no answer | 37ms |
| [--] | Cloudflare 2 | 1.0.0.1 | — no answer | 0ms |
| [--] | 8.8.8.8 | — no answer | 0ms | |
| [--] | Google 2 | 8.8.4.4 | — no answer | 0ms |
| [--] | Quad9 | 9.9.9.9 | — no answer | 30ms |
| [--] | OpenDNS | 208.67.222.222 | — no answer | 0ms |
| [--] | DNS.Watch | 84.200.69.80 | — no answer | 121ms |
| [--] | Yandex | 77.88.8.8 | — no answer | 0ms |
| [--] | Comodo | 8.26.56.26 | — no answer | 0ms |
| [--] | Verisign | 64.6.64.6 | — no answer | 0ms |
| [--] | Hurricane Electric | 74.82.42.42 | — no answer | 0ms |
| [--] | AdGuard | 94.140.14.14 | — no answer | 0ms |
TLS / SSL health
[OK] 78d left
issuer
C = US, O = Google Trust Services, CN = WE1
subject
CN = markdownonline.app
valid from
Oct 19 05:44:18 2026 GMT
valid to
Jan 17 06:44:16 2027 GMT
signature algorithm
ecdsa-with-SHA256
public key
id-ecPublicKey · 256 bit
subject alternative names (1)
markdownonline.app
sha256 fingerprint
27:80:70:90:D5:34:D7:8E:47:15:4D:07:FA:7B:A8:BF:98:87:D2:BE:A1:67:92:9A:F5:A3:AC:FE:B3:65:93:C0
TLS 1.0
[OK] disabled
TLS 1.1
[OK] disabled
TLS 1.2
[OK] supported
TLS 1.3
[OK] supported
HTTP/2
[OK] supported
HTTP/3 (QUIC)
[--] no
HSTS
[--] no
OCSP stapling
[--] no
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faq / markdownonline.app
How does the propagation check work for markdownonline.app? →
We query 12 well-known recursive resolvers (Cloudflare, Google, Quad9, OpenDNS and others) in parallel using dig +short with a 3-second per-resolver timeout. The verdict is propagated when every resolver returns the same answer set, partial if any disagree, and missing if none answer.
How accurate is the SSL audit? →
We perform a real TLS handshake against port 443 using openssl s_client for each protocol version, then parse the leaf certificate. HTTP/2 and HTTP/3 are probed with curl. HTTP/3 may be marked as not probeable when our host's libcurl is built without nghttp3.
Why was this result cached? →
Results are cached per hour per domain to be kind to upstream resolvers and to keep this page snappy. Click re-check now to force a fresh probe.