$ query “AS15412” --type=asn → 1 result(s)
AS15412 — FLAG-AS
FLAG TELECOM UK LIMITED
AS15412 is a mid-size transit provider operated by FLAG TELECOM UK LIMITED, registered in the United Kingdom since 2002. The network announces a respectable 34 048 IPv4 addresses. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #32 by Reach — Top 100 by customer cone size
- #4 in United Kingdom — Top 10 by reach within country
Basic Information
- Country
- 🇬🇧 United Kingdom
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- September 18, 2002
- Last Changed
- March 04, 2026
- Last Seen
- March 04, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 20 / 15
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 34 048
- Largest IPv4 Prefix
- /19 (8 192 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇬🇧 GB (10 IPs), 🇭🇰 HK (14 IPs), 🇪🇸 ES (1 IPs), 🇪🇬 EG, 🇵🇭 PH, 🇯🇵 JP, 🇸🇬 SG, 🇵🇰 PK, 🇰🇭 KH, 🇹🇭 TH, 🇺🇸 US, 🇶🇦 QA, 🇮🇳 IN, 🇸🇳 SN and 3 more
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 34 048 total (0.00%)
Connectivity Summary
- Upstream Providers
- 5 upstream autonomous systems providing transit
- Peers
- 325 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 42 downstream autonomous systems buying transit
- Degree
- 388 unique BGP neighbors (providers + customers + peers)
- Reach
- 44 429 — customer cone size measuring network influence
- Degree Rank
- #348
- Reach Rank
- #32
- Country Rank
- #4
Upstream Providers (5)
Prefix Lists
IPv4 Prefixes (20 total)
- 62.216.128.0/19 (8 192 addresses)
- 80.81.64.0/19 (8 192 addresses)
- 80.77.0.0/20 (4 096 addresses)
- 203.79.32.0/20 (4 096 addresses)
- 43.248.216.0/22 (1 024 addresses)
- 45.125.188.0/22 (1 024 addresses)
- 85.95.24.0/22 (1 024 addresses)
- 103.5.160.0/22 (1 024 addresses)
- 103.8.84.0/22 (1 024 addresses)
- 103.15.116.0/22 (1 024 addresses)
- 103.103.152.0/22 (1 024 addresses)
- 103.225.192.0/22 (1 024 addresses)
- 103.144.202.0/23 (512 addresses)
- 103.154.20.0/23 (512 addresses)
- 103.11.237.0/24 (256 addresses)
IPv6 Prefixes (1 total)
- 2001:1a00::/32