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AS680Deutsches Forschungsnetz (DFN)

GermanyRegistryRIPE NCCTypeEyeball

As of 22nd October 2026, AS680 (Deutsches Forschungsnetz (DFN)), an access network registered in Germany with RIPE NCC, originates 299 IPv4 prefixes covering 8M addresses and 25 IPv6 prefixes. By IPv4 address space that makes it the 89th-largest of the 79,663 networks we see originating IPv4, and the 5th-largest of 2,307 in Germany. It is seen behind 42 upstream networks, most often AS2914 (NTT America, Inc.) and AS3356 (Lumen (Level 3)), and in front of 31 downstream networks. 83% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

299

IPv6 prefixes

25

IPv4 addresses

8M

IPv6 /64s

344B

Upstream graph

The networks AS680 is seen behind, one and two hops out, drawn from real AS paths.

AS680Toward the internet core
Upstream graph for AS680: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS680Deutsches Forschu…This networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS6939Hurricane Electri…AS9002RETN LimitedAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS3549Lumen (fka. Globa…AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS680 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

946

adjacent networks

Upstreams
424%
Peers
87392%
Downstreams
313%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 42.

Upstreams of AS680
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer6,89945
AS3356Lumen (Level 3)USPeer5,98230
AS1299Arelion (fka. Telia Carrier)SEPeer4,97937
AS6939Hurricane Electric LLCUSPeer1,41814
AS9002RETN LimitedGBPeer1,3967
AS18106Viewqwest Pte LtdSGPeer1,0904
AS20965GEANT VerenigingNLPeer1,0882
AS13030Init7 (Switzerland) Ltd.CHPeer9084
AS213151Christian ElsenDEPeer6262
AS39122Blacknight Internet Solutions LimitedIEPeer6022

Prefixes

All 324

The largest blocks AS680 originates, widest first.

Largest prefixes originated by AS680
PrefixAddressesVisibility
134.106.0.0/15131k77/77
141.44.0.0/15131k77/77
193.174.0.0/15131k77/77
194.94.0.0/15131k77/77
87.77.0.0/1665.5k77/77
128.7.0.0/1665.5k77/77
128.176.0.0/1665.5k77/77
129.26.0.0/1665.5k77/77
129.70.0.0/1665.5k77/77
129.217.0.0/1665.5k77/77

Routing health

How AS680's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid83.3%270
  • Invalid0.0%0
  • No ROA16.7%54

Propagation

  • Globally propagated90% of full-feed peers or more99.7%323
  • Partially propagated40% to 90%0.3%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 299 prefixes

IPv6 — 25 prefixes

  • /2934.4B × /6436.0%9
  • /3017.2B × /644.0%1
  • /324.3B × /6416.0%4
  • /4865.5k × /6444.0%11

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.