161.104.128.0/19

Currently announced by AS6079 Astound, in the routed prefix 161.104.128.0/19.

Current ASN: AS6079; Astound
Routed prefix: 161.104.128.0/19; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: RIPENCC; United States · 161.104.128.0/19

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 161.104.128.0/19

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
161.104.128.0/19	AS6079	Astound	United States	2026-11-04 22:23	2026-11-08 10:26	Announcing

More specific routes32 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
161.104.128.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 20:18	Stopped
161.104.129.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.130.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.131.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.132.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.133.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.134.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.135.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 20:18	Stopped
161.104.136.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 20:18	Stopped
161.104.137.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 20:18	Stopped
161.104.138.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 20:18	Stopped
161.104.139.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.140.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.141.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.142.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.143.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.144.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.145.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.146.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.147.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.148.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.149.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.150.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.151.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.152.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.153.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.154.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.155.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.156.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.157.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 12:19	Stopped
161.104.158.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped
161.104.159.0/24	AS398781	OCULUS NETWORKS INC	United States	Before monitoring	2026-10-25 16:19	Stopped

Change logAll changes

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-11-04 22:23	161.104.128.0/19	New announcement	AS6079	Astound	—	United States

Look up another address

RIR allocation record

Registry: RIPENCC
Allocated block: 161.104.128.0/19
Country: United States
Allocation date: 1992-06-24
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.