Autonomous system
AS2856 · BT-UK-AS BTnet UK Regional network
AS2856 is an ISP or business network registered as BT-CENTRAL-PLUS, announcing 13,860,096 IPv4 addresses in 425 ranges and 5 IPv6 ranges.
The network
- ASN
- AS2856
- Name
- BT-UK-AS BTnet UK Regional network
- Type
- An ISP or business network
- Registered network
- BT-CENTRAL-PLUS
- IPv4 addresses
- 13,860,096
- Address ranges
- 425 IPv4 · 5 IPv6
Report abuse
Spam, attacks or scraping from AS2856's addresses go to
[email protected]
(from the registry's record). Include the address, the time with its time zone, and the evidence (log lines, headers).
Largest IPv4 ranges
The 20 largest of 425; check any address in them for VPN, proxy, Tor and blocklist signals.
| Range | Addresses | |
|---|---|---|
| 86.128.0.0/10 | 4,194,304 | Check 86.128.0.0 |
| 81.128.0.0/11 | 2,097,152 | Check 81.128.0.0 |
| 109.144.0.0/12 | 1,048,576 | Check 109.144.0.0 |
| 31.112.0.0/13, 31.120.0.0/14, 31.124.0.0/16 | 851,968 | Check 31.112.0.0 |
| 95.144.0.0/13 | 524,288 | Check 95.144.0.0 |
| 31.48.0.0/13 | 524,288 | Check 31.48.0.0 |
| 217.32.180.0/22, 217.32.184.0/21, 217.32.192.0/18 … | 416,768 | Check 217.32.180.0 |
| 217.39.128.0/17, 217.40.0.0/14, 217.44.0.0/16 … | 366,592 | Check 217.39.128.0 |
| 31.100.0.0/14, 31.104.0.0/16 | 327,680 | Check 31.100.0.0 |
| 31.90.0.0/15, 31.92.0.0/15, 31.94.0.0/16 | 327,680 | Check 31.90.0.0 |
| 147.148.0.0/14, 147.152.0.0/16 | 327,680 | Check 147.148.0.0 |
| 213.120.0.0/14 | 262,144 | Check 213.120.0.0 |
| 194.72.0.0/15, 194.74.0.0/18, 194.74.64.0/20 | 151,552 | Check 194.72.0.0 |
| 31.106.0.0/15 | 131,072 | Check 31.106.0.0 |
| 31.126.0.0/15 | 131,072 | Check 31.126.0.0 |
| 62.6.0.0/15 | 131,072 | Check 62.6.0.0 |
| 109.180.0.0/15 | 131,072 | Check 109.180.0.0 |
| 5.80.0.0/15 | 131,072 | Check 5.80.0.0 |
| 46.68.67.0/24, 46.68.68.0/22, 46.68.72.0/21 … | 113,920 | Check 46.68.67.0 |
| 217.46.144.0/20, 217.46.160.0/19, 217.46.192.0/18 … | 94,208 | Check 217.46.144.0 |
IP Risk API
Need this in your code?
The IP Risk API answers in JSON: the risk score, location and network for any IP. A free key covers 1,000 lookups a month; the reasons behind each score come with Pro.