Host

217.28.81.5

As of our latest check on 2026-06-08, 217.28.81.5 (FIBER Network s.r.o., AS51800, Czechia) had 1 open port (443) and no known CVEs.

Known CVEs on this host

1open port

0names pointing here

0known CVEs

0known exploited

Open ports and CVEs as of our latest check of this host, 2026-06-08.

No known CVEs on this host.

Network: FIBER Network s.r.o. AS51800
Open ports: 443 · at our latest check, 2026-06-08
Location: Czechia CZ
Hostname: 5-81.fiber.cz · reverse DNS, checked 2026-10-05
Route: 217.28.80.0/21 · announced by FIBER Network s.r.o. AS51800 RPKI valid
Organisation: FIBER Network s.r.o.
Registry network: FIBER-NETWORKS-APA · 217.28.80.0 - 217.28.87.255 · FIBER Network s.r.o. · RIPE
Abuse contact: [email protected] · for FIBER-NETWORKS-APA
First seen: 2026-06-08 06:41 UTC
Last seen alive: 2026-06-08 06:41 UTC
Hosted domains: No host name points here

Reputation

Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.

Services (1)

443/tcp TLS first 2026-06-08 · last 2026-06-08

TLS: TLSv1.2
Certificate for: fiber.cz
Issued by: fiber.cz
Valid: 2023-06-08 → 2024-06-07
Note: self-signed certificate

Raw response

WS�.\JfL4����w���q�,��DOWNGRD �t��1ù�%��\r�{}��E����QN�ThQ�
�@<960�20�٠�*m"����Ѱݮ�M���0
*�H�=0X10	UCZ10	UCZ10
UPrague10U
Fiber.cz s.r.o.10Ufiber.cz0
230608194124Z
240607194124Z0d10	UCZ10UCzech Republic10
UPrague10U
Fiber.cz s.r.o.10Ufiber.cz0Y0*�H�=*�H�=B���*Yh�9�{�<'dgO��Mf�?���)l-3g�U����yt�.&^U,;�?y��P7�#u�u0s0U�00U��0U%0
+0U��Cn��W`��f#�U��Tƀ=0U#0�T'=�Zn��

��p����0
*�H�=G0D 0Ng�c����{���o#Ҵ����;�֝,t
�� 3'�;h�L'��|�5`6���5��V5�����l��Aw(�ߥ8it���ݗQ��.Ф	���L1q��u����b��ٺ(��܉�|T}��l����G0E!���E��L�r�7�h�4' ��a5��am��dC 
��F��EH���g����K�R��i٠�

Port history

Every port that has answered a connection on this address, and when. A port is listed as open above only when a service was identified on it. Times are UTC.

Report an issue with this page