cached probe / public landing
DNS & SSL for corelink-docs.hsrn.nyu.edu
Last probed 2 hours ago. Use "re-check now" to refresh.
probe.2026101115
probe result
/
corelink-docs.hsrn.nyu.edu
cached 2 hours ago
· 6815ms
A
record
[WARN] partial
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [OK] | Cloudflare | 1.1.1.1 |
216.165.12.43
|
0ms |
| [OK] | Cloudflare 2 | 1.0.0.1 |
216.165.12.43
|
121ms |
| [OK] | 8.8.8.8 |
216.165.12.43
|
0ms | |
| [OK] | Google 2 | 8.8.4.4 |
216.165.12.43
|
0ms |
| [OK] | Quad9 | 9.9.9.9 |
216.165.12.43
|
0ms |
| [OK] | OpenDNS | 208.67.222.222 |
216.165.12.43
|
0ms |
| [OK] | DNS.Watch | 84.200.69.80 |
;; communications error to 84.200.69.80#53: timed out
;; no servers could be reached
|
2815ms |
| [OK] | Yandex | 77.88.8.8 |
216.165.12.43
|
0ms |
| [OK] | Comodo | 8.26.56.26 |
216.165.12.43
|
0ms |
| [OK] | Verisign | 64.6.64.6 |
216.165.12.43
|
0ms |
| [OK] | Hurricane Electric | 74.82.42.42 |
216.165.12.43
|
0ms |
| [OK] | AdGuard | 94.140.14.14 |
216.165.12.43
|
0ms |
AAAA
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
|
4ms |
| [--] | 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 |
MX
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
|
13ms |
| [--] | 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 |
TXT
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
|
7ms |
| [--] | 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 |
NS
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
|
21ms |
| [--] | 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 |
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
|
10ms |
| [--] | 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
|
15ms |
| [--] | 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 |
|---|---|---|---|---|
| [--] | 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
|
14ms |
| [--] | 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 |
PTR
record
[WARN] partial
| STATUS | RESOLVER | IP | VALUE | LATENCY |
|---|---|---|---|---|
| [--] | Cloudflare | 1.1.1.1 | — no answer | 290ms |
| [--] | 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
|
2746ms |
| [--] | 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
[WARN] 29d left
issuer
C = US, O = Let's Encrypt, CN = YR2
subject
CN = corelink-docs.hsrn.nyu.edu
valid from
Aug 11 20:22:47 2026 GMT
valid to
Nov 9 20:22:46 2026 GMT
signature algorithm
sha256WithRSAEncryption
public key
rsaEncryption · 4096 bit
subject alternative names (1)
corelink-docs.hsrn.nyu.edu
sha256 fingerprint
00:BB:B2:DC:36:93:5A:4A:04:17:F8:6F:B8:7F:D9:4F:F1:78:56:BC:6F:5F:AF:0A:6F:F1:AD:35:AC:E2:71:C1
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 / corelink-docs.hsrn.nyu.edu
How does the propagation check work for corelink-docs.hsrn.nyu.edu? →
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.