AS23308UTILITY TELEPHONE, INC.
United StatesRegistryARINAs of 23rd October 2026, AS23308 (UTILITY TELEPHONE, INC.), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 42k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 4,794th-largest of the 79,658 networks we see originating IPv4, and the 1,683rd-largest of 18,483 in the United States. It is seen behind 2 upstream networks, most often AS3356 (Lumen (Level 3)) and AS7018 (AT&T Enterprises, LLC), and in front of 4 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 AS23308 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS23308 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
12
adjacent networks
- Upstreams
- 217%
- Peers
- 650%
- Downstreams
- 433%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS3356Lumen (Level 3) | US | Peer | 1,595 | 137 |
| AS7018AT&T Enterprises, LLC | US | Peer | 75 | 5 |
Prefixes
The largest blocks AS23308 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 66.113.64.0/19 | 8.2k | 77/77 |
| 216.162.160.0/19 | 8.2k | 77/77 |
| 173.255.96.0/20 | 4.1k | 77/77 |
| 104.255.240.0/21 | 2k | 77/77 |
| 139.60.40.0/21 | 2k | 77/77 |
| 204.14.136.0/21 | 2k | 77/77 |
| 206.128.120.0/21 | 2k | 77/77 |
| 206.211.208.0/21 | 2k | 77/77 |
| 208.73.8.0/21 | 2k | 77/77 |
| 208.75.240.0/21 | 2k | 77/77 |
Routing health
How AS23308'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%17
Propagation
- Globally propagated90% of full-feed peers or more100.0%17
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 16 prefixes
IPv6 — 1 prefixes
- /324.3B × /64100.0%1
Recent changes
Announcements that started or stopped since 24th Sept 2026.
No announcement by AS23308 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.