IP subnet details

147.189.221.0/24

AS4601  — Antonios A. Chariton

Summary

Country
GR Greece
Domain daknob.net
Size 256
Registry RIPE NCC
Network Name DNET-LEGACY-147-189

Whois

inetnum: 147.189.216.0 - 147.189.223.255
netname: DNET-LEGACY-147-189
descr: Antonios A. Chariton
org: ORG-AAC10-RIPE
remarks: The BGP Clock
remarks:
remarks: Every 1 hour the prefix 147.189.(216+N).0/24 is advertised. The
remarks: N here is calculated as HH % 8, so the hour in 24h format
remarks: modulo 8. Naturally, UTC is used. The prefix is withdrawn 10'
remarks: after the advertisement.
remarks:
remarks: At most one /24 should be available at any single time, which
remarks: means that all 8 prefixes of the /21 rotate 3 times a day.
remarks:
remarks: At 00:00, 147.189.216.0/24 is advertised, at 00:10 it is then
remarks: withdrawn, then at 01:00 147.189.217.0/24 is advertised, which
remarks: is in turn withdrawn at 01:10, and so on.
remarks:
remarks: Why? We are conducting research on BGP Stuck Routes to better
remarks: understand how they happen, when, which equipment is more
remarks: buggy, etc. We also want to understand them better. As this is
remarks: a beacon, anyone can study the results using RIPE RIS, or any
remarks: other source like RouteViews. Feel free to take a look and let
remarks: everyone know if something interesting ever comes up!
remarks:
remarks: An example of research presented at RIPE 89 is here:
remarks: https://ripe89.ripe.net/wp-content/uploads/presentations/8-BGP-Zombies-RIPE89.pdf
remarks:
remarks: We are also studying the propagation of BGP Communities with
remarks: this beacon, to minimize the count of BGP UPDATEs generated.
remarks: At origin, all prefixes are tagged with the following values:
remarks:
remarks: BGP Legacy Communities:
remarks: (4492, 64700)
remarks: (4601, 64700)
remarks:
remarks: BGP Extended Communities:
remarks: (ro, 4492, 1337)
remarks: (ro, 4601, 1337)
remarks: (ro, 210312, 1337)
remarks:
remarks: BGP Large Communities:
remarks: (4492, 64700, 1337)
remarks: (4601, 64700, 1337)
remarks: (210312, 64700, 1337)
remarks:
remarks: For any more info or collaboration, find me using the Contact
remarks: page at daknob.net :)
country: CH
geofeed: https://geo.daknob.net/as210312.csv
remarks: Geofeed https://geo.daknob.net/as210312.csv
admin-c: AAC138-RIPE
tech-c: AAC138-RIPE
status: LEGACY
mnt-by: RIPE-NCC-LEGACY-MNT
mnt-by: gr-daknob-1-mnt
created: 2021-04-01T08:57:01Z
last-modified: 2025-06-10T12:26:19Z
source: RIPE

organisation: ORG-AAC10-RIPE
org-name: Antonios A. Chariton
country: GR
org-type: LIR
address: Avidou 3
address: 59100
address: Veria
address: GREECE
phone: +306988723888
e-mail: [email protected]
admin-c: AAC138-RIPE
tech-c: AAC138-RIPE
abuse-c: AR48003-RIPE
mnt-ref: gr-daknob-1-mnt
mnt-by: RIPE-NCC-HM-MNT
mnt-by: gr-daknob-1-mnt
created: 2018-08-27T09:36:18Z
last-modified: 2020-12-16T13:43:07Z
source: RIPE

person: Antonios A. Chariton
address: Avidou 3
address: 59100
address: Veria
address: GREECE
e-mail: [email protected]
phone: +306988723888
nic-hdl: AAC138-RIPE
mnt-by: gr-daknob-1-mnt
created: 2018-08-27T09:36:17Z
last-modified: 2018-08-27T12:26:27Z
source: RIPE

route: 147.189.216.0/21
origin: AS4601
remarks: The BGP Clock
remarks:
remarks: Read the inetnum for 147.189.216.0/21 for (much) more info!
mnt-by: gr-daknob-1-mnt
created: 2024-10-21T14:17:17Z
last-modified: 2025-06-06T11:22:38Z
source: RIPE

CIDR IP address subranges within 147.189.221.0/24 subnet

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