2a12:e140:: - Ajax Whois

No reverse DNS
Not on blocklists

Network

BHT-NET6-1

Held by

lir-de-bht-berlin-1-MNT

Range

2a12:e140:: - 2a12:e140:0:ffff:ffff:ffff:ffff:ffff

CIDR

2a12:e140::/48

Type

AGGREGATED-BY-LIR

Country

Registered on

2026-02-23

Last updated

2026-02-23

Status

active

Report abuse to

hrz@bht-berlin.de

Contacts

Holder
lir-de-bht-berlin-1-MNT
Administrative and technical
Markus Wigge MW8254-RIPE
Berliner Hochschule fuer Technik
Luxemburger Str. 10
13353 Berlin
Germany
+49 30 4504 7777
+49 30 4504 66 7777
Abuse
Abuse-C Role AR65978-RIPE
GERMANY
Berlin
13353
Luxemburger Str. 10
hrz@bht-berlin.de

Reverse DNS

Names: None

Network

Announced by: AS680 Deutsches Forschungsnetz (DFN)
Route: 2a12:e140::/29, carried by 2,747 of bgp.tools' BGP feeds
Kind: Eyeball
Country: DE
Tagged: Tor services, Academic, Tranco 10k Host, Validating RPKI ROV

Upstreams and peers

AS2914 NTT America, Inc.40,107 paths
AS3356 Lumen (Level 3)28,345 paths
AS6939 Hurricane Electric LLC20,182 paths
AS6461 Zayo Bandwidth15,695 paths
AS1299 Arelion (fka. Telia Carrier)11,315 paths
AS9002 RETN Limited7,234 paths
AS20965 GEANT Vereniging7,068 paths
AS7195 EdgeUno5,051 paths
AS3216 PJSC Vimpelcom2,229 paths
AS33891 Core-Backbone GmbH1,162 paths
AS8220 COLT1,071 paths
AS5405 Inter.link GmbH896 paths

And 66 more

Downstreams

AS12816 Leibniz-Rechenzentrum701 paths
AS5501 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.698 paths
AS43066 Information und Technik Nordrhein-Westfalen486 paths
AS5520 Universitaet zu Koeln401 paths
AS200943 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.354 paths
AS47610 RWTH Aachen University352 paths
AS56357 Technical University of Munich347 paths
AS199578 Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau346 paths
AS210482 Max-Delbrueck-Centrum fuer Molekulare Medizin in der Helmholtz-Gemeinschaft332 paths
AS34878 Karlsruhe Institute of Technology321 paths
AS34520 Deutsche Forschungsgemeinschaft e.V.319 paths
AS41289 Deutscher Wetterdienst290 paths

And 19 more

From RIPEstat

Routes AS680 announces

299 IPv4 prefixes covering 7,721,472 addresses, and 25 IPv6 prefixes

IPv4

And 249 more

IPv6

From bgp.tools

Peering

Name: DFN Deutsches Forschungsnetz e.V.
Type: Educational/Research
Peering policy: Selective
Traffic: 1-5Tbps
Traffic ratio: Balanced
Scope: Europe
AS-SET: AS680:AS-DFNTOWINISP
Website: https://www.dfn.de

Internet exchanges

Exchange	Speed	Route servers
AMS-IX	200 Gbit/s over 2 ports	Yes
BCIX: BCIX Peering LAN	400 Gbit/s	No
DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN	200 Gbit/s over 2 ports	No
DE-CIX Hamburg: DE-CIX Hamburg Peering LAN	10 Gbit/s	No
Frys-IX	100 Gbit/s	No
MegaIX Dusseldorf	100 Gbit/s	No

Facilities

CarrierColo Berlin Luetzow (I/P/B/ site B), Berlin, DE
Digital Realty Dusseldorf DUS1-3, Düsseldorf, DE
Digital Realty Frankfurt FRA1-27, Frankfurt, DE
GlobalConnect Hamburg (HAM2), Hamburg, DE
NIKHEF Amsterdam, Amsterdam, NL

From PeeringDB

Location

Location: Germany
Accuracy: Within 200 km

Location from GeoLite2 data created by MaxMind

Blocklists

Spamhaus ZEN Not listed