$ query “AS39122” --type=asn → 1 result(s)
AS39122 — BLACKNIGHT-AS
Blacknight Internet Solutions Limited
AS39122 is a mid-size transit provider operated by Blacknight Internet Solutions Limited, based in Ireland since 2005. The network announces a respectable 28 416 IPv4 addresses. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #4 in Ireland — Top 10 by reach within country
Basic Information
- Country
- 🇮🇪 Ireland
- Category
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- December 16, 2005
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 28 / 23
- IPv6 Prefixes (raw / aggregated)
- 6 / 6
- IPv4 Addresses
- 28 416
- Largest IPv4 Prefix
- /19 (8 192 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇮🇪 IE (36 IPs), 🇺🇸 US (2 IPs), 🇨🇦 CA (1 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 28 416 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 1 393 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 18 downstream autonomous systems buying transit
- Degree
- 1 417 unique BGP neighbors (providers + customers + peers)
- Reach
- 21 — customer cone size measuring network influence
- Degree Rank
- #102
- Reach Rank
- #2 244
- Country Rank
- #4
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (28 total)
- 78.153.192.0/19 (8 192 addresses)
- 46.22.128.0/20 (4 096 addresses)
- 81.17.240.0/20 (4 096 addresses)
- 85.159.16.0/21 (2 048 addresses)
- 200.69.8.0/21 (2 048 addresses)
- 91.210.232.0/22 (1 024 addresses)
- 185.2.64.0/22 (1 024 addresses)
- 185.209.164.0/22 (1 024 addresses)
- 91.197.234.0/23 (512 addresses)
- 176.52.222.0/23 (512 addresses)
- 185.17.238.0/23 (512 addresses)
- 185.94.44.0/23 (512 addresses)
- 64.96.3.0/24 (256 addresses)
- 64.255.40.0/24 (256 addresses)
- 69.5.186.0/24 (256 addresses)
- 185.173.167.0/24 (256 addresses)
- 185.204.136.0/24 (256 addresses)
- 193.36.43.0/24 (256 addresses)
- 193.203.126.0/24 (256 addresses)
- 194.8.48.0/24 (256 addresses)
- 194.8.59.0/24 (256 addresses)
- 194.9.174.0/24 (256 addresses)
- 194.9.222.0/24 (256 addresses)
IPv6 Prefixes (6 total)
- 2a0d:1f00::/29
- 2a01:a8::/32
- 2a01:aa::/32
- 2a01:4d8::/32
- 2a03:dd41::/32
- 2620:57:4003::/48