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Data as of Nov 3, 2026

153.97.0.0/16

No anonymizer space · no proxy exits in 30 days

Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. · space held by Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

Announcement
this exact prefix
RPKI valid
Announced by
AS680
Type
Business
98% of it

Announcements

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

PrefixOriginTypeHolderRPKI
153.97.0.0/21
since May 2005
AS5501BusinessFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.11.0/24
since Dec 2006
AS5501BusinessFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.25.0/24
since Jun 2025
AS51402ResidentialFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.26.0/24
since Aug 2013
AS5501BusinessFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.32.0/24
since Mar 2023
AS3320ResidentialFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.34.0/24
since Nov 2024
AS3320ResidentialFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.134.0/24
since Aug 2011
AS9063ResidentialFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.148.0/24
since Aug 2016
AS35170BusinessFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.174.0/23
since Feb 2024
AS200943BusinessFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
153.97.176.0/23
since Dec 2017
AS200943BusinessFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
153.97.0.0/1665,536FRAUNHOFER-INTRANET-97Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. (ORG-FZFD2-RIPE) · DELEGACY—[email protected]
└ 153.97.8.0 - 153.97.10.255768FHG-IBMT-GOLM-NET8-10Fraunhofer Institut GOLM.IBMTLEGACYSep 8, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.11.0/24256FHG-IOSB-NET11Fraunhofer Institut IOSBLEGACYDec 6, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.12.0/24256FHG-IML-NET12Fraunhofer Institut IMLLEGACYOct 23, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.13.0/24256FHG-IDMT-NET13Fraunhofer Institut IDMTLEGACYNov 16, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.14.0/24256FHG-IPK-NET14Fraunhofer Institut IPKLEGACYDec 6, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.15.0/24256FHG-IKS-NET15Fraunhofer Institut IKSLEGACYDec 20, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.17.0/24256FHG-FORUM-NET1Fraunhofer Forum BerlinLEGACYJun 27, 2007[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.34.0/24256Fraunhofer-FFBunknownLEGACYNov 18, 2024[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.63.0/24256FHG-NET-FREE-63Fraunhofer Gesellschaft DeutschlandLEGACYAug 12, 2011[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.103.0/24256FHG-IZM-153-97-103-NETNetz fuer IZM BerlinLEGACYJan 23, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.104.0/24256FHG-IZM-153-97-104-NETNetz fuer IZM BerlinLEGACYJan 23, 2006[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.135.0/24256FHG-IWKS-135Fraunhofer Gesellschaft DeutschlandLEGACYOct 4, 2011[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.137.0/24256FHG-IWES-137Fraunhofer Institut IWESLEGACYJan 11, 2012[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.148.0/24256FHG-CBPFraunhofer CBP in LeunaLEGACYAug 15, 2012[email protected]
via FRAUNHOFER-INTRANET-97
└ 153.97.188.0/221,024Fraunhofer-IML-188-97Fraunhofer-IMLLEGACYMay 12, 2009[email protected]
via FRAUNHOFER-INTRANET-97

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

65,536 addresses
TypeAddressesShareRanges
Business64,51298%14
Residential1,0241.6%4

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS680

DE
Name
Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.
Type
Education
Registered
Sep 1, 1993
Domain
dfn.de
Website
www.dfn.de
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
Tor exits
2