$ query “AS3257” --type=asn → 1 result(s)
AS3257 — GTT-BACKBONE
GTT Communications Inc.
AS3257 is a Tier-1 transit provider operated by GTT Communications Inc., registered in the United States since 2002. The network announces an impressive 8.6 million IPv4 addresses, including a /14. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #4 by Reach — Top 100 by customer cone size
- #66 by Degree — Top 100 by unique BGP neighbor count
- #3 in United States — Top 10 by reach within country
Basic Information
- Country
- 🇺🇸 United States
- Category
- Internet Service Provider
- Network Role
- Tier-1 Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- September 20, 2002
- Last Changed
- March 04, 2026
- Last Seen
- March 04, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 297 / 846
- IPv6 Prefixes (raw / aggregated)
- 67 / 52
- IPv4 Addresses
- 8 563 712
- Largest IPv4 Prefix
- /14 (262 144 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇺🇸 US (693 IPs), 🇬🇧 GB (812 IPs), 🇩🇪 DE (1 361 IPs), 🇳🇱 NL, 🇱🇹 LT, 🇨🇳 CN, 🇧🇪 BE, 🇫🇷 FR, 🇨🇦 CA, 🇦🇪 AE, 🇲🇽 MX, 🇮🇱 IL, 🇨🇭 CH, 🇪🇸 ES and 63 more
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 183 flagged IPs out of 8 563 712 total (0.00%)
Connectivity Summary
- Upstream Providers
- 0 upstream autonomous systems providing transit
- Peers
- 36 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 1 798 downstream autonomous systems buying transit
- Degree
- 1 876 unique BGP neighbors (providers + customers + peers)
- Reach
- 61 248 — customer cone size measuring network influence
- Degree Rank
- #66
- Reach Rank
- #4
- Country Rank
- #3
Prefix Lists
IPv4 Prefixes (1 297 total)
- 67.100.0.0/14 (262 144 addresses)
- 68.164.0.0/14 (262 144 addresses)
- 82.108.0.0/14 (262 144 addresses)
- 87.84.0.0/14 (262 144 addresses)
- 217.204.0.0/14 (262 144 addresses)
- 64.204.0.0/15 (131 072 addresses)
- 64.248.0.0/15 (131 072 addresses)
- 65.84.0.0/15 (131 072 addresses)
- 66.92.0.0/15 (131 072 addresses)
- 66.166.0.0/15 (131 072 addresses)
- 72.244.0.0/15 (131 072 addresses)
- 74.0.0.0/15 (131 072 addresses)
- 87.82.0.0/15 (131 072 addresses)
- 154.14.0.0/15 (131 072 addresses)
- 212.134.0.0/15 (131 072 addresses)
- 64.51.0.0/16 (65 536 addresses)
- 64.81.0.0/16 (65 536 addresses)
- 64.105.0.0/16 (65 536 addresses)
- 64.144.0.0/16 (65 536 addresses)
- 65.86.0.0/16 (65 536 addresses)
- 66.80.0.0/16 (65 536 addresses)
- 66.95.0.0/16 (65 536 addresses)
- 66.134.0.0/16 (65 536 addresses)
- 66.200.0.0/16 (65 536 addresses)
- 69.3.0.0/16 (65 536 addresses)
- 69.33.0.0/16 (65 536 addresses)
- 74.2.0.0/16 (65 536 addresses)
- 81.188.0.0/16 (65 536 addresses)
- 84.37.0.0/16 (65 536 addresses)
- 85.189.0.0/16 (65 536 addresses)
- 86.53.0.0/16 (65 536 addresses)
- 134.222.0.0/16 (65 536 addresses)
- 135.196.0.0/16 (65 536 addresses)
- 149.235.0.0/16 (65 536 addresses)
- 155.229.0.0/16 (65 536 addresses)
- 194.231.0.0/16 (65 536 addresses)
- 195.21.0.0/16 (65 536 addresses)
- 195.40.0.0/16 (65 536 addresses)
- 195.81.0.0/16 (65 536 addresses)
- 195.86.0.0/16 (65 536 addresses)
- 195.143.0.0/16 (65 536 addresses)
- 195.172.0.0/16 (65 536 addresses)
- 205.179.0.0/16 (65 536 addresses)
- 206.135.0.0/16 (65 536 addresses)
- 207.145.0.0/16 (65 536 addresses)
- 207.168.0.0/16 (65 536 addresses)
- 208.41.0.0/16 (65 536 addresses)
- 209.101.0.0/16 (65 536 addresses)
- 212.168.0.0/16 (65 536 addresses)
- 212.212.0.0/16 (65 536 addresses)
IPv6 Prefixes (67 total)
- 2001:668::/29
- 2a04:6640::/29
- 2a05:18c0::/29
- 2a0a:1f40::/29
- 2a13:fc00::/29
- 2a14:4340::/29
- 2a14:4b00::/29
- 2a14:5200::/29
- 2a04:1120::/30
- 2a0c:8640::/30
- 2a0f:b242::/31
- 2001:590::/32
- 2001:680::/32
- 2001:6f8::/32
- 2001:aa0::/32
- 2001:1478::/32
- 2001:4890::/32
- 2400:f780::/32
- 2405:5e00::/32
- 2604:cf80::/32
- 2605:d480::/32
- 2606:6200::/32
- 2607:f588::/32
- 2610:38::/32
- 2a00:16c8::/32
- 2a00:1750::/32
- 2a00:43c0::/32
- 2a00:8d00::/32
- 2a00:bb40::/32
- 2a02:9e8::/32
- 2a02:d28::/32
- 2a02:6280::/32
- 2a04:a3c7::/32
- 2a06:2b81::/32
- 2a06:9f47::/32
- 2a07:bdc1::/32
- 2a0a:6041::/32
- 2a0d:d901::/32
- 2602:ffb7:590::/46
- 2001:67c:1514::/48
- 2600:1407:1c::/48
- 2620:131:2024::/48
- 2620:135:7003::/48
- 2a00:4b00:171::/48
- 2a00:7580:16::/48
- 2a04:e00:2::/48
- 2a05:a882:de10::/48
- 2a06:1180:12bb::/48
- 2a0a:2d04:9825::/48
- 2a0c:7881:98dd::/48