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Total

100

DNS

Email

Security

Network

100

Availability

Domainuni-sofia.bg

IPv41

IPv61

MX records1

StatusActive

Domain technical report

Начало - Софийски университет "Св. Климент Охридски"

uni-sofia.bg

Софийски Университет Св. Климент Охридски

Generated: 2026-08-11T15:02:58-05:00 · Cached result

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IPv41

IPv61

MX1

NS3

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓

IPv6 (AAAA)10 / 10 pts · Dns

1 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

3 NS record(s); 2 or more required.

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

✓

DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

✓

CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

1 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

105 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: uni-sofia.bg

IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓

IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓

HTTP response40 / 40 pts · Availability

HTTP/2 200

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

62.44.96.51

AAAA

1 record(s)

2001:67c:20d0::51

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

5 zimbra.uni-sofia.bg.

TXT

1 record(s)

"v=spf1 ip4:62.44.96.4/32 ip4:62.44.96.15/32 ip4:62.44.96.70/32 ip4:62.44.96.81/32 ip4:62.44.97.93/32 ip4:62.44.97.94/32 ip6:2001:67c:20d1:97::7d/128 " "ip6:2001:67c:20d0::4/128 ip6:2001:67c:20d0::15/128 ip6:2001:67c:20d1:97::7e/128 ip4:62.44.96.122/32 " "ip6:2001:67c:20d0::122/128 ip6:2001:67c:20d0::70/128 ip6:2001:67c:20d0::81/128 -all"

NS

3 record(s)

ns2.uni-sofia.bg.
ns1.uni-sofia.bg.
ns.digsys.bg.

SOA

1 record(s)

ns1.uni-sofia.bg. 123.ucc.uni-sofia.bg. 2026072479 36000 3600 3600000 36000

CAA

5 record(s)

0 issue "digicert.com"
0 issuewild "comodoca.com"
0 issuewild "sectigo.com"
0 issue "letsencrypt.org"
0 issue "sectigo.com"

DS

1 record(s)

12955 13 2 5529C1F33060DD213DE3DD226FDC6EBEFD929C3042949F71E272A5A6 7CD26789

DNSKEY

2 record(s)

257 3 13 tqphQA/ISfAzMZ5Hf8BzG737Uk9YpSMU38w9O7YmBaNHzZ0rlMfReziC OPJ/Xx7+f59n7mXKEljv53uMA4lqAg==
256 3 13 LKVq6DIHJ6111Yu/WY3Hyt+Ra8NAIStZ2DW6+vlVaQMiElsD0A8RuBrT 1TbFxBzhKGMvhbNBb6cLAI5dxk1Mvg==

RRSIG

8 record(s)

TXT 13 2 86400 20260820221923 20260806221123 7518 uni-sofia.bg. ZV4qdwu5vTsvoJP/zW550/RTyd4wERIHyR3HdPNdYxbUwHdrB5cuO8KG M7vBp75JAhJ8GS0rW62+BDw5SAa5xQ==
MX 13 2 86400 20260820221923 20260806221123 7518 uni-sofia.bg. cC6LIABEx5SRkYnr1qMfozDIHmS4QuQgFdfGIQhKJvOhGWdXKF0r0lQA ad+YvmDzoIYE8h7XNE0YHBW7zcINsA==
AAAA 13 2 86400 20260820221923 20260806221123 7518 uni-sofia.bg. 08Ce/u4ojdpxEfOoyw/9JBq4RTvhtOXa1W4fEoJkfK99hb+cuSPGB0rj 38uBGD7yjepXkD1Rm4oTucZf33FZ2A==
DNSKEY 13 2 86400 20260825060906 20260811060330 12955 uni-sofia.bg. CXJDzCFG/gJMCnEhlQOur/pW/hDY0A2OFafCTCzGh/YwaREEnl1Pkww0 XaYeePH1lQFKeghQ4SOhLA8cff2jrA==
A 13 2 86400 20260820221923 20260806221123 7518 uni-sofia.bg. eZrLJN+9Yv7roYHkBroivScZ3kZgnxKAaYB0dqhEu7SuXD4dpBt0CCbM Y9LjRFlz8X0eXFHntw8/Hnna4yzmsQ==
DS 8 2 86400 20260910170010 20260811170010 7074 bg. RgBLfXp2Z0TDfy0eGNHJ3+CXU7LRoHUSBZ3hqn1rzf065dIgvWmVHUxf MLyU8bhYoYVvuafRv8ly98Nbn55jVjPaVxhkIs+slWyjPf4AziH4fb3/ egPThIgVJcr8BAAQ7LVowfXL2kVIJYYgVWxeF10jmyN99K3VAz0r/HRO E+iRnr4x0d7/gjOSIF6h0Q5WR8FsH9gel1bAJticfh/3i4I2bFrJDoRn AHoNfQbkn+JgTIeXOtknQb1aJQlh/21XsyFdOGsMXb0z6IaOn1dbfDMI Rlg04/xooTF1bZ3jX6GsEy937+q4c6QbK87cYyFbZlUh5X+CRSVZWLKT TMlrYA==
NS 13 2 86400 20260820221923 20260806221123 7518 uni-sofia.bg. 2v+zkxwpdwM5I/Y9MPkbPIyz+SeeJes5VUY+lJb5LTbMhIjtl8zttxmm Bx1ndRCmOvGXOWapL3kxLzuOFujN9g==
CAA 13 2 86400 20260824113126 20260810103934 7518 uni-sofia.bg. HZC+Ld5zpcvTfA5M3hq8K5iZH5y0rFafVdVxQwIStdInu/4/zO6eo6i+ nr4PmNx/ZxV0eJo8sITBwaD3vq6Xug==

NSEC

0 record(s)

—

Not configured

NSEC3

0 record(s)

—

Not configured

SRV

0 record(s)

—

Not configured

NAPTR

0 record(s)

—

Not configured

TLSA

0 record(s)

—

Not configured

SSHFP

0 record(s)

—

Not configured

SPF

Configured

v=spf1 ip4:62.44.96.4/32 ip4:62.44.96.15/32 ip4:62.44.96.70/32 ip4:62.44.96.81/32 ip4:62.44.97.93/32 ip4:62.44.97.94/32 ip6:2001:67c:20d1:97::7d/128 ip6:2001:67c:20d0::4/128 ip6:2001:67c:20d0::15/128 ip6:2001:67c:20d1:97::7e/128 ip4:62.44.96.122/32 ip6:2001:67c:20d0::122/128 ip6:2001:67c:20d0::70/128 ip6:2001:67c:20d0::81/128 -all

DMARC

Configured

v=DMARC1; p=quarantine; sp=none; rua=mailto:postmaster@uni-sofia.bg; ruf=mailto:postmaster@uni-sofia.bg; rf=afrf; pct=100; ri=86400

DKIM

Selector default

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy5vnQVkaih6I6UtZ5K5gpznWE6ywbvaYjmZsCuGfxuwAd1KI79Dm338+xIDxYVGJWqQX+kl48vJz0sAqEa61he5xynhBEIg1lQgQsQQJGCP8OLYdthKGjnZc6MpjHM5SRqpaUw2t9Qmt0glrmEKOuDnN5Z761oEDxp0/bHVZQlBYgDu3JKpp9euhEESSCWlL9KJpAZgN8NYL7N8AMljEXCC44EFFs7RV9A301uwpczxLaSP8pp7FCp7frg1KStU0lwfbMhbDbfrgm5xeV89f8LsHJ1YU2dLwUcvYx4k0yWVr5HAgLFInRyuz9so+uTfzqpDFN6fvLVwqkPpx3oKt8QIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Начало - Софийски университет "Св. Климент Охридски"

Description

Софийски Университет Св. Климент Охридски

Final URL

https://uni-sofia.bg/

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://uni-sofia.bg/

Version

Server

Apache

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Sectigo Limited

*.uni-sofia.bg

Valid from

2025-10-24T19:00:00-05:00

Valid until

2026-11-24T17:59:59-06:00

Days remaining

105

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

3 active

✓

HSTSImplemented

—

Content Security PolicyNot detected

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

—

Referrer PolicyNot detected

—

Permissions PolicyNot detected

—

Cross-Origin-Opener-PolicyNot detected

—

Cross-Origin-Embedder-PolicyNot detected

—

Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

62.44.96.51

192,18 ms

Cloudflare

1.1.1.1

62.44.96.51

170,03 ms

Quad9

9.9.9.9

62.44.96.51

50,24 ms

OpenDNS

208.67.222.222

62.44.96.51

178,09 ms

AdGuard

94.140.14.14

62.44.96.51

174,73 ms

IP, geolocation and ASNAssociated network information

62.44.96.51

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

zimbra.uni-sofia.bg

Port 25: Closed/unreachable - 1.5 ms - 
Port 465: Closed/unreachable - 286.1 ms - 
Port 587: Closed/unreachable - 138.8 ms - 220 zimbra.uni-sofia.bg ESMTP Postfix

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