SSL Report: praatbox.be (185.77.196.23)
Assessed on:  Sun, 08 Jun 2025 14:12:23 UTC | Clear cache

Due to a recently discovered bug in Apple's code, your browser is exposed to MITM attacks. Click here for more information.

Summary
Overall Rating
B
0
20
40
60
80
100
Certificate
 
Protocol Support
 
Key Exchange
 
Cipher Strength
 

Visit our documentation page for more information, configuration guides, and books. Known issues are documented here.
This server accepts RC4 cipher, but only with older protocols. Grade capped to B.  MORE INFO »
This server supports TLS 1.0 and TLS 1.1. Grade capped to B. MORE INFO »
This server does not support TLS 1.3.  MORE INFO »
This site works only in browsers with SNI support.
Certificate #1: RSA 3072 bits (SHA256withRSA)
Server Key and Certificate #1
Subject www.praatbox.be
Fingerprint SHA256: ed0b7676bddb80228b7276d5a30554a28b709838247bb608a9419b48adc03227
Pin SHA256: 7U9bVwxfGGdmrntEDywjyDxYrZq04dTveT0Dyg2d2oM=
Common names www.praatbox.be
Alternative names praatbox.be www.praatbox.be
Serial Number 05d2d3c5bec905b82fbe7d0bcc49796d5266
Valid from Fri, 23 May 2025 06:40:16 UTC
Valid until Thu, 21 Aug 2025 06:40:15 UTC (expires in 2 months and 12 days)
Key RSA 3072 bits (e 65537)
Weak key (Debian) No
Issuer R11
AIA: http://r11.i.lencr.org/
Signature algorithm SHA256withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL
CRL: http://r11.c.lencr.org/103.crl
Revocation status Good (not revoked)
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (2710 bytes)
Chain issues None
#2
Subject R11
Fingerprint SHA256: 591e9ce6c863d3a079e9fabe1478c7339a26b21269dde795211361024ae31a44
Pin SHA256: bdrBhpj38ffhxpubzkINl0rG+UyossdhcBYj+Zx2fcc=
Valid until Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 9 months)
Key RSA 2048 bits (e 65537)
Issuer ISRG Root X1
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server www.praatbox.be
Fingerprint SHA256: ed0b7676bddb80228b7276d5a30554a28b709838247bb608a9419b48adc03227
Pin SHA256: 7U9bVwxfGGdmrntEDywjyDxYrZq04dTveT0Dyg2d2oM=

RSA 3072 bits (e 65537) / SHA256withRSA
2 Sent by server R11
Fingerprint SHA256: 591e9ce6c863d3a079e9fabe1478c7339a26b21269dde795211361024ae31a44
Pin SHA256: bdrBhpj38ffhxpubzkINl0rG+UyossdhcBYj+Zx2fcc=

RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server www.praatbox.be
Fingerprint SHA256: ed0b7676bddb80228b7276d5a30554a28b709838247bb608a9419b48adc03227
Pin SHA256: 7U9bVwxfGGdmrntEDywjyDxYrZq04dTveT0Dyg2d2oM=

RSA 3072 bits (e 65537) / SHA256withRSA
2 Sent by server R11
Fingerprint SHA256: 591e9ce6c863d3a079e9fabe1478c7339a26b21269dde795211361024ae31a44
Pin SHA256: bdrBhpj38ffhxpubzkINl0rG+UyossdhcBYj+Zx2fcc=

RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server www.praatbox.be
Fingerprint SHA256: ed0b7676bddb80228b7276d5a30554a28b709838247bb608a9419b48adc03227
Pin SHA256: 7U9bVwxfGGdmrntEDywjyDxYrZq04dTveT0Dyg2d2oM=

RSA 3072 bits (e 65537) / SHA256withRSA
2 Sent by server R11
Fingerprint SHA256: 591e9ce6c863d3a079e9fabe1478c7339a26b21269dde795211361024ae31a44
Pin SHA256: bdrBhpj38ffhxpubzkINl0rG+UyossdhcBYj+Zx2fcc=

RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server www.praatbox.be
Fingerprint SHA256: ed0b7676bddb80228b7276d5a30554a28b709838247bb608a9419b48adc03227
Pin SHA256: 7U9bVwxfGGdmrntEDywjyDxYrZq04dTveT0Dyg2d2oM=

RSA 3072 bits (e 65537) / SHA256withRSA
2 Sent by server R11
Fingerprint SHA256: 591e9ce6c863d3a079e9fabe1478c7339a26b21269dde795211361024ae31a44
Pin SHA256: bdrBhpj38ffhxpubzkINl0rG+UyossdhcBYj+Zx2fcc=

RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server www.praatbox.be
Fingerprint SHA256: ed0b7676bddb80228b7276d5a30554a28b709838247bb608a9419b48adc03227
Pin SHA256: 7U9bVwxfGGdmrntEDywjyDxYrZq04dTveT0Dyg2d2oM=

RSA 3072 bits (e 65537) / SHA256withRSA
2 Sent by server R11
Fingerprint SHA256: 591e9ce6c863d3a079e9fabe1478c7339a26b21269dde795211361024ae31a44
Pin SHA256: bdrBhpj38ffhxpubzkINl0rG+UyossdhcBYj+Zx2fcc=

RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA

Click here to expand

Configuration
Protocols
TLS 1.3 No
TLS 1.2 Yes
TLS 1.1 Yes
TLS 1.0 Yes
SSL 3 No
SSL 2 No


Cipher Suites
# TLS 1.2 (suites in server-preferred order)
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x9f)   DH 2048 bits   FS 256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x9e)   DH 2048 bits   FS 128
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x39)   DH 2048 bits   FS   WEAK 256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x33)   DH 2048 bits   FS   WEAK 128
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d)   WEAK 256
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c)   WEAK 128
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d)   WEAK 256
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c)   WEAK 128
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)   WEAK 256
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK 128
TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa)   WEAK 112
TLS_RSA_WITH_RC4_128_SHA (0x5)   INSECURE 128
TLS_RSA_WITH_RC4_128_MD5 (0x4)   INSECURE 128
# TLS 1.1 (suites in server-preferred order)
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x39)   DH 2048 bits   FS   WEAK 256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x33)   DH 2048 bits   FS   WEAK 128
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)   WEAK 256
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK 128
TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa)   WEAK 112
TLS_RSA_WITH_RC4_128_SHA (0x5)   INSECURE 128
TLS_RSA_WITH_RC4_128_MD5 (0x4)   INSECURE 128
# TLS 1.0 (suites in server-preferred order)
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x39)   DH 2048 bits   FS   WEAK 256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x33)   DH 2048 bits   FS   WEAK 128
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)   WEAK 256
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK 128
TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa)   WEAK 112
TLS_RSA_WITH_RC4_128_SHA (0x5)   INSECURE 128
TLS_RSA_WITH_RC4_128_MD5 (0x4)   INSECURE 128


Handshake Simulation
Android 2.3.7   No SNI 2 Server closed connection
Android 4.0.4 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
Android 4.1.1 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
Android 4.2.2 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
Android 4.3 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
Android 4.4.2 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 5.0.0 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 6.0 RSA 3072 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 7.0 RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Android 8.0 RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Android 8.1 RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Android 9.0 RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Baidu Jan 2015 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
BingPreview Jan 2015 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 49 / XP SP3 RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 69 / Win 7  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Chrome 70 / Win 10 RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Chrome 80 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Firefox 31.3.0 ESR / Win 7 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 47 / Win 7  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 49 / XP SP3 RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 62 / Win 7  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Firefox 73 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Googlebot Feb 2018 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
IE 7 / Vista RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
IE 8 / XP   No FS 1   No SNI 2 Server closed connection
IE 8-10 / Win 7  R RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
IE 11 / Win 7  R RSA 3072 (SHA256)   TLS 1.2 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384   DH 2048  FS
IE 11 / Win 8.1  R RSA 3072 (SHA256)   TLS 1.2 > http/1.1   TLS_DHE_RSA_WITH_AES_256_GCM_SHA384   DH 2048  FS
IE 10 / Win Phone 8.0 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
IE 11 / Win Phone 8.1  R RSA 3072 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256   ECDH secp256r1  FS
IE 11 / Win Phone 8.1 Update  R RSA 3072 (SHA256)   TLS 1.2 > http/1.1   TLS_DHE_RSA_WITH_AES_256_GCM_SHA384   DH 2048  FS
IE 11 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 15 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Edge 16 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Edge 18 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Edge 13 / Win Phone 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 6u45   No SNI 2 Server closed connection
Java 7u25 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Java 8u161 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 11.0.3 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 12.0.1 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 0.9.8y RSA 3072 (SHA256)   TLS 1.0 TLS_DHE_RSA_WITH_AES_256_CBC_SHA   DH 2048  FS
OpenSSL 1.0.1l  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.0.2s  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.0k  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
OpenSSL 1.1.1c  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 5.1.9 / OS X 10.6.8 RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
Safari 6 / iOS 6.0.1 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 6.0.4 / OS X 10.8.4  R RSA 3072 (SHA256)   TLS 1.0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA   ECDH secp256r1  FS
Safari 7 / iOS 7.1  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 7 / OS X 10.9  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 8 / iOS 8.4  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 8 / OS X 10.10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 9 / iOS 9  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 9 / OS X 10.11  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 10 / iOS 10  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 10 / OS X 10.12  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 12.1.1 / iOS 12.3.1  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH x25519  FS
Apple ATS 9 / iOS 9  R RSA 3072 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Yahoo Slurp Jan 2015 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
YandexBot Jan 2015 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
# Not simulated clients (Protocol mismatch)
IE 6 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)

Click here to expand

(1) Clients that do not support Forward Secrecy (FS) are excluded when determining support for it.
(2) No support for virtual SSL hosting (SNI). Connects to the default site if the server uses SNI.
(3) Only first connection attempt simulated. Browsers sometimes retry with a lower protocol version.
(R) Denotes a reference browser or client, with which we expect better effective security.
(All) We use defaults, but some platforms do not use their best protocols and features (e.g., Java 6 & 7, older IE).
(All) Certificate trust is not checked in handshake simulation, we only perform TLS handshake.


Protocol Details
Secure Renegotiation Supported
Secure Client-Initiated Renegotiation No
Insecure Client-Initiated Renegotiation No
BEAST attack Not mitigated server-side (more info)   TLS 1.0: 0xc014
POODLE (SSLv3) No, SSL 3 not supported (more info)
POODLE (TLS) No (more info)
Zombie POODLE No (more info)   TLS 1.2 : 0xc027
GOLDENDOODLE No (more info)   TLS 1.2 : 0xc027
OpenSSL 0-Length No (more info)   TLS 1.2 : 0xc027
Sleeping POODLE No (more info)   TLS 1.2 : 0xc027
Downgrade attack prevention No, TLS_FALLBACK_SCSV not supported (more info)
SSL/TLS compression No
RC4 Yes   INSECURE (more info)
Heartbeat (extension) No
Heartbleed (vulnerability) No (more info)
Ticketbleed (vulnerability) No (more info)
OpenSSL CCS vuln. (CVE-2014-0224) No (more info)
OpenSSL Padding Oracle vuln.
(CVE-2016-2107)
No (more info)
ROBOT (vulnerability) No (more info)
Forward Secrecy Yes (with most browsers)   ROBUST (more info)
ALPN Yes   h2 http/1.1
NPN No
Session resumption (caching) No (IDs assigned but not accepted)
Session resumption (tickets) No
OCSP stapling No
Strict Transport Security (HSTS) No
HSTS Preloading Not in: Chrome  Edge  Firefox  IE 
Public Key Pinning (HPKP) No (more info)
Public Key Pinning Report-Only No
Public Key Pinning (Static) No (more info)
Long handshake intolerance No
TLS extension intolerance No
TLS version intolerance No
Incorrect SNI alerts No
Uses common DH primes No
DH public server param (Ys) reuse No
ECDH public server param reuse Yes
Supported Named Groups x25519, secp256r1, secp384r1 (server preferred order)
SSL 2 handshake compatibility No


HTTP Requests
1 https://praatbox.be/  (HTTP/1.1 200 OK)
1
Content-Type text/html
Last-Modified Fri, 21 Oct 2022 12:13:15 GMT
Accept-Ranges bytes
ETag "e2249b7f46e5d81:0"
Server Microsoft-IIS/10.0
X-Powered-By ASP.NET
Date Sun, 08 Jun 2025 14:10:32 GMT
Connection close
Content-Length 13655


Miscellaneous
Test date Sun, 08 Jun 2025 14:09:49 UTC
Test duration 153.866 seconds
HTTP status code 200
HTTP server signature Microsoft-IIS/10.0
Server hostname 185-77-196-23.hosted-by.teleweb.network


SSL Report v2.4.0