# roa

Published articles for roa.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## Packets Down Range #42:Verizon, H5 tour, China ROAs

DevFeed: [Packets Down Range #42:Verizon, H5 tour, China ROAs](<https://devfeed.tech/articles/packets-down-range-42-verizon-h5-tour-china-roas-40176.md>)

Original publisher: [Read original article](<https://blog.j2sw.com/pdr/packets-down-range-42verizon-h5-tour-china-roas/>)

Author: j2sw

Published: 2026-08-14T16:12:36Z

Content type: news

Language: en

Sources: [Justin Wilson (j2sw)](<https://devfeed.tech/sources/justin-wilson-j2sw.md>)

Topics: [datacenter](<https://devfeed.tech/topics/datacenter.md>), [networking](<https://devfeed.tech/topics/networking.md>), [Routing Security](<https://devfeed.tech/topics/routing-security.md>), [.env](<https://devfeed.tech/topics/dotenv.md>)

Tags: [bead](<https://devfeed.tech/tags/bead.md>), [bgp](<https://devfeed.tech/tags/bgp.md>), [broadband](<https://devfeed.tech/tags/broadband.md>), [china](<https://devfeed.tech/tags/china.md>), [data-center](<https://devfeed.tech/tags/data-center.md>), [fiber](<https://devfeed.tech/tags/fiber.md>), [internet2](<https://devfeed.tech/tags/internet2.md>), [isp](<https://devfeed.tech/tags/isp.md>), [news](<https://devfeed.tech/tags/news.md>), [packets-down-newsletter](<https://devfeed.tech/tags/packets-down-newsletter.md>), [packets-down-range](<https://devfeed.tech/tags/packets-down-range.md>), [peering](<https://devfeed.tech/tags/peering.md>), [roa](<https://devfeed.tech/tags/roa.md>), [routing-security](<https://devfeed.tech/tags/routing-security.md>), [terminal](<https://devfeed.tech/tags/terminal.md>), [verizon](<https://devfeed.tech/tags/verizon.md>)

### AI overview

This English news roundup covers interconnection and data center topics, including H5's 325 Hudson, the value of peering beyond transit-cost savings, OpenAI's reported plan, routing visibility for Internet2 traffic, broadband developments in Texas and Indiana, Verizon fiber expansion, China's use of ROAS, and related tools and sites.

### Source excerpt

Rain Rain Rain. Indiana has been rained on this week. Things are flooded but the Internet still works! So fire up your terminal, and let's head down range. Patreon Subscribers can view additional news here. It's only $3 a month. It's like buying me a Red Bull once a month. Interconnection & Data Center News-Inside ... Read more The post Packets Down Range #42:Verizon, H5 tour, China ROAs appeared first on Justin Wilson (j2sw).

## The Third App from J2sw: Prefix Advertisement Checker

DevFeed: [The Third App from J2sw: Prefix Advertisement Checker](<https://devfeed.tech/articles/the-third-app-from-j2sw-prefix-advertisement-checker-40188.md>)

Original publisher: [Read original article](<https://blog.j2sw.com/resources/prefix-advertisement-checker/>)

Author: j2sw

Published: 2026-07-31T12:17:00Z

Content type: tutorial

Language: en

Sources: [Justin Wilson (j2sw)](<https://devfeed.tech/sources/justin-wilson-j2sw.md>)

Topics: [BGP](<https://devfeed.tech/topics/bgp.md>), [networking](<https://devfeed.tech/topics/networking.md>), [App](<https://devfeed.tech/topics/app.md>), [Cisco](<https://devfeed.tech/topics/cisco.md>), [MikroTik](<https://devfeed.tech/topics/mikrotik.md>)

Tags: [application](<https://devfeed.tech/tags/application.md>), [bgp](<https://devfeed.tech/tags/bgp.md>), [irr](<https://devfeed.tech/tags/irr.md>), [j2-networks](<https://devfeed.tech/tags/j2-networks.md>), [j2-updates](<https://devfeed.tech/tags/j2-updates.md>), [network-engineering-resources](<https://devfeed.tech/tags/network-engineering-resources.md>), [network-tools](<https://devfeed.tech/tags/network-tools.md>), [network-troubleshooting](<https://devfeed.tech/tags/network-troubleshooting.md>), [prefix-advertisement](<https://devfeed.tech/tags/prefix-advertisement.md>), [ripe-ris](<https://devfeed.tech/tags/ripe-ris.md>), [roa](<https://devfeed.tech/tags/roa.md>), [routing](<https://devfeed.tech/tags/routing.md>), [routing-policy](<https://devfeed.tech/tags/routing-policy.md>), [rpki](<https://devfeed.tech/tags/rpki.md>), [visibility](<https://devfeed.tech/tags/visibility.md>)

### AI overview

This article describes the J2SW Prefix Advertisement Checker, an application that evaluates an exact IPv4 or IPv6 prefix using live BGP data. It reports observed origin ASNs from RIPE RIS collectors, collector visibility, RPKI/ROA status, and matching IRR route objects, with an optional expected origin ASN for comparison.

### Source excerpt

A prefix can appear in the global BGP table and still have a routing problem. The route may originate from the wrong ASN. Its ROA may also authorize a shorter prefix but reject the advertised prefix length. Checking each part normally means pulling data from several routing tools. The J2SW Prefix Advertisement Checker, my 3rd ... Read more The post The Third App from J2sw: Prefix Advertisement Checker appeared first on Justin Wilson (j2sw).