OSN

Host

217.91.178.37

Tags: Expired certificate

As of our latest check on 2026-06-09, 217.91.178.37 (Deutsche Telekom AG, AS3320, Germany) 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, 2026-06-09.

No known CVEs on this host.

Network
Deutsche Telekom AG AS3320
Open ports
443 · at our latest check, 2026-06-09
Location
Dortmund, DE-NW · Germany DE
Hostname
mail.hotel-birkenhof.de · reverse DNS, checked 2026-10-05
Route
217.80.0.0/12 · announced by Deutsche Telekom AG AS3320 RPKI valid
Organisation
Deutsche Telekom AG · Network service provider (transit)
Registry network
DTAG-STATIC05 · 217.91.128.0 - 217.92.255.255 · RIPE
Abuse contact
[email protected] · for DTAG-STATIC05
First seen
2026-06-08 21:18 UTC
Last seen alive
2026-06-09 00:21 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 2026-06-09
TLS
TLSv1.2
Certificate for
checkin.hotel-birkenhof.de
Issued by
R12
Valid
2026-04-10 → 2026-07-09
Raw response 
�Mj'\UT��(�+�+�
�c�/,��~����;�o� s@+����X��L%�}��o��d���(!�/�
$
!0�
0�����K�/t�՚�-�>�Z�0
	*�H��
0310	UUS10U

Let's Encrypt10
UR120
260410060927Z
260709060926Z0%1#0!Ucheckin.hotel-birkenhof.de0�"0
	*�H��
�0�
���ď*]��PF��i�`"H\2�Vz�P�+���s�!P��P�5�Od�/�W�F��E�1*H\)ʎZ����EN����m��8,r���|j")�`�k~1rp,�A���1(K��rO�U��
��ЗrM��a����x��y��i�wm.�”��S��U�Bg�;L\��z/�X5s��X�]:����cڸ6*#����<ȿ���^��̚b`r�s�fcY=R��0��9Cƾ�

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.

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