AS399272Barnholdt, LLC
United StatesRegistryARINAs of 11th November 2026, AS399272 (Barnholdt, LLC), a network registered in the United States with ARIN, originates 3 IPv4 prefixes covering 768 addresses and 14 IPv6 prefixes. By IPv4 address space that makes it the 45,670th-largest of the 80,763 networks we see originating IPv4, and the 9,536th-largest of 18,758 in the United States. It is seen behind 7 upstream networks, most often AS20473 (The Constant Company, LLC) and AS917 (Misaka Network, Inc.). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 94% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS399272 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS399272 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
14
adjacent networks
- Upstreams
- 750%
- Peers
- 750%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS20473The Constant Company, LLC | US | Peer | 311 | 80 |
| AS917Misaka Network, Inc. | US | Peer | 227 | 100 |
| AS35487Misaka Network, Inc. | US | Peer | 189 | 123 |
| AS56655Gigahost AS |  NO | Peer | 125 | 63 |
| AS14618Amazon.com, Inc. | US | Peer | 124 | 62 |
| AS57695Misaka Network, Inc. | US | Peer | 36 | 36 |
| AS56662Marcin Gondek |  PL | Peer | 3 | 1 |
Prefixes
The largest blocks AS399272 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 23.144.204.0/24 | 256 | 77/77 |
| 31.77.66.0/24 | 256 | 77/77 |
| 198.153.215.0/24 | 256 | 1/77 |
| 2604:26a0:5000::/40 | 16.8M × /64 | 62/63 |
| 2604:26a0:500c::/46 | 262k × /64 | 62/63 |
| 2604:26a0:5002::/48 | 65.5k × /64 | 60/63 |
| 2604:26a0:5003::/48 | 65.5k × /64 | 59/63 |
| 2604:26a0:5005::/48 | 65.5k × /64 | 62/63 |
| 2604:26a0:5007::/48 | 65.5k × /64 | 59/63 |
| 2604:26a0:500a::/48 | 65.5k × /64 | 62/63 |
Routing health
How AS399272'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
- Valid100.0%17
- Invalid0.0%0
- No ROA0.0%0
Propagation
- Globally propagated90% of full-feed peers or more94.1%16
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%5.9%1
Prefix sizes
IPv4 — 3 prefixes
IPv6 — 14 prefixes
- /4016.8M × /647.1%1
- /46262k × /647.1%1
- /4865.5k × /6485.7%12
Recent changes
Announcements that started or stopped since 12th Oct 2026.
- Announced2604:26a0:6100::/482nd Nov 2026
- Announced2604:26a0:500e::/481st Nov 2026
- Announced198.153.215.0/2429th Oct 2026
- Announced2604:26a0:5002::/4817th Oct 2026
- Withdrawn2604:26a0:5002::/4816th Oct 2026
- Withdrawn2604:26a0:500e::/4812th Oct 2026
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.