SSL Report:
www.blackhillsenergy.com
(20.12.139.142)
Assessed on: Mon, 09 Jun 2025 17:12:45 UTC
| Clear cache
Summary
0
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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 does not support Forward Secrecy with the reference browsers.
Grade capped to B.
MORE INFO »
This server does not support TLS 1.3. MORE INFO »
Certificate #1: RSA 2048 bits (SHA256withRSA)

Server Key and Certificate #1
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|
Subject |
*.blackhillsenergy.com
Fingerprint SHA256: 12a7edaf4a4b7e42e24aabbc929fd3f20b1cb92a61c71e5c0ac29fa4339d654a Pin SHA256: pph+4ZKrWNcQyYH0zshVQ16CZoEsGpJRzpXwxl75PBU= |
Common names | *.blackhillsenergy.com |
Alternative names | *.blackhillsenergy.com blackhillsenergy.com |
Serial Number | 06dcabcc0bac70bb160e8d3210b89e82 |
Valid from | Fri, 25 Apr 2025 00:00:00 UTC |
Valid until | Thu, 23 Apr 2026 23:59:59 UTC (expires in 10 months and 14 days) |
Key | RSA 2048 bits (e 65537) |
Weak key (Debian) | No |
Issuer | DigiCert Global G2 TLS RSA SHA256 2020 CA1
AIA: http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt |
Signature algorithm | SHA256withRSA |
Extended Validation | No |
Certificate Transparency | Yes (certificate) |
OCSP Must Staple | No |
Revocation information |
CRL, OCSP CRL: http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl OCSP: http://ocsp.digicert.com |
Revocation status | Good (not revoked) |
DNS CAA | No (more info) |
Trusted | Yes
Mozilla Apple Android Java Windows |


![]() ![]() |
Configuration

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

Cipher Suites | ||
![]() ![]() # TLS 1.2 (suites in server-preferred order)
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TLS_RSA_WITH_AES_256_CBC_SHA (0x35 )
WEAK
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256 | |
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f )
WEAK
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128 | |
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d )
WEAK
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256 | |
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c )
WEAK
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128 | |
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d )
WEAK
|
256 | |
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c )
WEAK
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128 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014 )
ECDH secp256r1 (eq. 3072 bits RSA) FS
WEAK
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256 | |
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013 )
ECDH secp256r1 (eq. 3072 bits RSA) FS
WEAK
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128 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028 )
ECDH secp256r1 (eq. 3072 bits RSA) FS
WEAK
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256 | |
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027 )
ECDH secp256r1 (eq. 3072 bits RSA) FS
WEAK
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128 | |
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030 )
ECDH secp256r1 (eq. 3072 bits RSA) FS
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256 | |
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f )
ECDH secp256r1 (eq. 3072 bits RSA) FS
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128 |

Handshake Simulation | |||
Android 4.4.2 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Android 5.0.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Android 6.0 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Android 7.0 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Android 8.0 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Android 8.1 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Android 9.0 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
BingPreview Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Chrome 49 / XP SP3 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Chrome 69 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Chrome 70 / Win 10 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Chrome 80 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Firefox 31.3.0 ESR / Win 7 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Firefox 47 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Firefox 49 / XP SP3 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Firefox 62 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Firefox 73 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Googlebot Feb 2018 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
IE 11 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
IE 11 / Win 8.1 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
IE 11 / Win Phone 8.1 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
IE 11 / Win Phone 8.1 Update R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
IE 11 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Edge 15 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Edge 16 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Edge 18 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Edge 13 / Win Phone 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Java 8u161 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Java 11.0.3 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Java 12.0.1 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
OpenSSL 1.0.1l R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
OpenSSL 1.0.2s R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
OpenSSL 1.1.0k R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
OpenSSL 1.1.1c R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 6 / iOS 6.0.1 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 7 / iOS 7.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 7 / OS X 10.9 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 8 / iOS 8.4 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 8 / OS X 10.10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 9 / iOS 9 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 9 / OS X 10.11 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 10 / iOS 10 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 10 / OS X 10.12 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 12.1.2 / MacOS 10.14.6 Beta R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Safari 12.1.1 / iOS 12.3.1 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
Apple ATS 9 / iOS 9 R | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
Yahoo Slurp Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
YandexBot Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
![]() ![]() # Not simulated clients (Protocol mismatch)
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Android 2.3.7 No SNI 2 |
Protocol mismatch (not simulated) |
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Android 4.0.4 |
Protocol mismatch (not simulated) |
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Android 4.1.1 |
Protocol mismatch (not simulated) |
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Android 4.2.2 |
Protocol mismatch (not simulated) |
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Android 4.3 |
Protocol mismatch (not simulated) |
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Baidu Jan 2015 |
Protocol mismatch (not simulated) |
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IE 6 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
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IE 7 / Vista |
Protocol mismatch (not simulated) |
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IE 8 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
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IE 8-10 / Win 7 R |
Protocol mismatch (not simulated) |
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IE 10 / Win Phone 8.0 |
Protocol mismatch (not simulated) |
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Java 6u45 No SNI 2 |
Protocol mismatch (not simulated) |
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Java 7u25 |
Protocol mismatch (not simulated) |
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OpenSSL 0.9.8y |
Protocol mismatch (not simulated) |
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Safari 5.1.9 / OS X 10.6.8 |
Protocol mismatch (not simulated) |
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Safari 6.0.4 / OS X 10.8.4 R |
Protocol mismatch (not simulated) |
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(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 | Mitigated server-side (more info) |
POODLE (SSLv3) | No, SSL 3 not supported (more info) |
POODLE (TLS) | No (more info) |
Zombie POODLE | No (more info)
TLS 1.2 : 0x0035
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GOLDENDOODLE | No (more info)
TLS 1.2 : 0x0035
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OpenSSL 0-Length | No (more info)
TLS 1.2 : 0x0035
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Sleeping POODLE | No (more info)
TLS 1.2 : 0x0035
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Downgrade attack prevention | Unknown (requires support for at least two protocols, excl. SSL2) |
SSL/TLS compression | No |
RC4 | No |
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 | With some browsers (more info) |
ALPN | Yes http/1.1 |
NPN | No |
Session resumption (caching) | No (IDs empty) |
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 | TLS 1.152 TLS 2.152 |
Incorrect SNI alerts | No |
Uses common DH primes | No, DHE suites not supported |
DH public server param (Ys) reuse | No, DHE suites not supported |
ECDH public server param reuse | No |
Supported Named Groups | secp256r1, secp384r1, secp224r1, secp521r1 (server preferred order) |
SSL 2 handshake compatibility | No |

![]() ![]() |
1 https://www.blackhillsenergy.com/
(HTTP/1.1 200 OK)
| 1 | |
Date | Mon, 09 Jun 2025 15:01:00 GMT | |
Server | Apache | |
Cache-Control | max-age=600, public | |
X-Drupal-Dynamic-Cache | MISS | |
Content-language | en | |
X-Content-Type-Options | nosniff | |
X-Frame-Options | SAMEORIGIN | |
Expires | Sun, 19 Nov 1978 05:00:00 GMT | |
Vary | Cookie,Accept-Encoding,User-Agent | |
X-Generator | Drupal 10 (https://www.drupal.org) | |
X-Drupal-Cache | HIT | |
X-Mod-Pagespeed | 1.13.35.2-0 | |
Content-Security-Policy | default-src 'self'; child-src 'self' *.usw2.pure.cloud; connect-src 'self' *.blackhillscorp.com *.arcgis.com *.arcgisonline.com *.nr-data.net shyka-prod-usw2.s3.us-west-2.amazonaws.com *.newrelic.com *.usw2.pure.cloud wss://*.usw2.pure.cloud udc-neb.kampyle.com www.google-analytics.com *.blackhillsenergy.com apps.usw2.pure.cloud api.usw2.pure.cloud apps.mypurecloud.com api.mypurecloud.com wss://streaming.usw2.pure.cloud maps.googleapis.com siteintercept.qualtrics.com s.qualtrics.com; font-src 'self' js.arcgis.com fonts.googleapis.com fonts.gstatic.com svc.webspellchecker.net themes.googleusercontent.com use.typekit.net fonts.googleapis.com *.blackhillsenergy.com apps.usw2.pure.cloud api.usw2.pure.cloud apps.mypurecloud.com api.mypurecloud.com data: modernizr.com; form-action 'self' http://*.blackhillsenergyservices.com https://*.blackhillsenergyservices.com *.speedpay.com blackhillscorp.qualtrics.com syndication.twitter.com platform.twitter.com; frame-ancestors 'self'; frame-src 'self' *.blackhillsenergy.com *.blackhillscorp.com *.usw2.pure.cloud www.googletagmanager.com nebula-cdn.kampyle.com blackhillscorp.qualtrics.com platform.twitter.com syndication.twitter.com staticxx.facebook.com www.facebook.com www.google.com player.vimeo.com *.youtube.com youtu.be; img-src 'self' data: about: *.blackhillsenergy.com *.blackhillscorp.com *.usw2.pure.cloud *.arcgis.com cdn.arcgis.com www.arcgis.com js.arcgis.com *.googleapis.com *.typekit.net *.twimg.com cdn.ckeditor.com maps.gstatic.com siteintercept.qualtrics.com sjc1.qualtrics.com nebula-cdn.kampyle.com platform.twitter.com platform.twitter.com stats.g.doubleclick.net syndication.twitter.com udc-neb.kampyle.com www.facebook.com www.google-analytics.com i.ytimg.com; media-src 'self' *.usw2.pure.cloud; object-src 'self' *.usw2.pure.cloud; script-src 'self' 'unsafe-inline' 'unsafe-eval' *.blackhillsenergy.com js.arcgis.com unpkg.com *.nr-data.net *.newrelic.com *.usw2.pure.cloud *.googleapis.com bat.bing.com cdn.ckeditor.com cdn.syndication.twimg.com cdnjs.cloudflare.com code.jquery.com connect.facebook.net nebula-cdn.kampyle.com static.addtoany.com svc.webspellchecker.net ton.twimg.com platform.twitter.com secure.adnxs.com use.typekit.net ssl.google-analytics.com www.google.com www.googletagmanager.com tagmanager.google.com *.gstatic.com apps.usw2.pure.cloud api.usw2.pure.cloud apps.mypurecloud.com api.mypurecloud.com www.google-analytics.com www.googleadservices.com siteintercept.qualtrics.com zn3ejiu7bgenxivkw-blackhillscorp.siteintercept.qualtrics.com *.vimeocdn.com; style-src 'self' 'unsafe-inline' *.blackhillsenergy.com js.arcgix.com unpkg.com *.googleapis.com www.googletagmanager.com cdn.ckeditor.com cloud.typography.com p.typekit.net platform.twitter.com ton.twimg.com use.typekit.net www.google.com apps.usw2.pure.cloud api.usw2.pure.cloud apps.mypurecloud.com api.mypurecloud.com; upgrade-insecure-requests; worker-src 'self' blob: *.argcis.com; | |
Cache-Control | max-age=0, no-cache, s-maxage=10 | |
Content-Length | 35151 | |
Content-Type | text/html; charset=UTF-8 | |
Set-Cookie | NSC_xxx-fyufsobm-qspe_443_ttm_mcwt=ffffffff090c497945525d5f4f58455e445a4a42378b;path=/;secure;httponly | |
Connection | close |

Miscellaneous | |
Test date | Mon, 09 Jun 2025 17:11:06 UTC |
Test duration | 98.641 seconds |
HTTP status code | 200 |
HTTP server signature | Apache |
Server hostname | - |
SSL Report v2.4.0