AS1321Verizon Business
United StatesRegistryARINAs of 14th November 2026, AS1321 (Verizon Business), a network registered in the United States with ARIN, originates 21 IPv4 prefixes covering 6.1k addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 14,181st-largest of the 80,840 networks we see originating IPv4, and the 4,108th-largest of 18,773 in the United States. It is seen behind 4 upstream networks, most often AS701 (Verizon Business) and AS702 (Verizon Business - EMEA), and in front of 12 downstream networks. None of its announcements have a valid RPKI ROA. 100% 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 AS1321 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS1321 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
33
adjacent networks
- Upstreams
- 412%
- Peers
- 1752%
- Downstreams
- 1236%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS701Verizon Business | US | Peer | 3,700 | 141 |
| AS702Verizon Business - EMEA | US | Peer | 3,042 | 141 |
| AS703Verizon Business - APAC | US | Peer | 2,075 | 142 |
| AS1339Verizon Business | US | Peer | 141 | 141 |
Prefixes
All 31The largest blocks AS1321 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 152.196.4.0/22 | 1k | 78/78 |
| 152.196.4.0/24 | 256 | 78/78 |
| 152.196.8.0/24 | 256 | 78/78 |
| 152.196.10.0/24 | 256 | 78/78 |
| 152.196.12.0/24 | 256 | 78/78 |
| 152.196.14.0/24 | 256 | 78/78 |
| 152.196.16.0/24 | 256 | 78/78 |
| 152.196.18.0/24 | 256 | 78/78 |
| 152.196.20.0/24 | 256 | 78/78 |
| 152.196.22.0/24 | 256 | 78/78 |
Routing health
How AS1321'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
- Valid0.0%0
- Invalid0.0%0
- No ROA100.0%31
Propagation
- Globally propagated90% of full-feed peers or more100.0%31
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 21 prefixes
IPv6 — 10 prefixes
- /4865.5k × /64100.0%10
Recent changes
Announcements that started or stopped since 15th Oct 2026.
No announcement by AS1321 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.