$ query “AS44066” --type=asn → 1 result(s)

AS44066 · DE-FIRSTCOLO

firstcolo GmbH

AS44066 is run by firstcolo GmbH and is a mid-size transit provider, registered in Germany since 2007. The system announces a solid 163 840 IPv4 addresses, including a /16, and supports IPv6. The bulk of its IP address space is in Germany, with additional presence in the United States and the Netherlands, and smaller footprints in 9 additional countries.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇩🇪 Germany
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
November 13, 2007
Last Changed
March 04, 2026
Last Seen
July 27, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
59 / 48
IPv6 Prefixes (raw / aggregated)
16 / 13
IPv4 Addresses
163 840
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇩🇪 Germany (300 608 IPs), 🇺🇸 United States (1 104 IPs), 🇳🇱 Netherlands (1 072 IPs) and 9 more
Prefix Changed
July 07, 2026

Reputation

Reputation
Good — 4 flagged IPs out of 163 840 total (0.00%)

Connectivity Summary

Upstream Providers
6 upstreams providing transit
Peers
211 networks exchanging traffic without transit
Downstream Customers
20 downstreams buying transit
Unclassified
18 unclassified BGP neighbors
Degree
255 unique BGP neighbors
Reach
27 networks in customer cone

Upstream Providers (6)

  • AS174 — COGENT (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS3320 — DTAG (Tier-1 transit)
  • AS39686 — AS-EUROFIBER

Prefix Lists

IPv4 Prefixes (59 total)

  • 84.200.0.0/16 (65 536 addresses (/16 prefix))
  • 82.211.0.0/18 (16 384 addresses (/18 prefix))
  • 212.224.64.0/18 (16 384 addresses (/18 prefix))
  • 84.201.0.0/18 (16 384 addresses (/18 prefix))
  • 37.114.96.0/19 (8 192 addresses (/19 prefix))
  • 159.100.0.0/19 (8 192 addresses (/19 prefix))
  • 79.133.32.0/19 (8 192 addresses (/19 prefix))
  • 31.172.80.0/20 (4 096 addresses (/20 prefix))
  • 212.79.216.0/21 (2 048 addresses (/21 prefix))
  • 212.79.212.0/22 (1 024 addresses (/22 prefix))
  • 194.187.164.0/22 (1 024 addresses (/22 prefix))
  • 62.223.44.0/22 (1 024 addresses (/22 prefix))
  • 91.222.176.0/22 (1 024 addresses (/22 prefix))
  • 193.107.120.0/22 (1 024 addresses (/22 prefix))
  • 109.232.120.0/22 (1 024 addresses (/22 prefix))
  • 185.171.204.0/22 (1 024 addresses (/22 prefix))
  • 185.160.0.0/22 (1 024 addresses (/22 prefix))
  • 185.92.160.0/22 (1 024 addresses (/22 prefix))
  • 185.15.8.0/22 (1 024 addresses (/22 prefix))
  • 80.173.138.0/23 (512 addresses (/23 prefix))
  • 194.143.134.0/23 (512 addresses (/23 prefix))
  • 185.197.166.0/23 (512 addresses (/23 prefix))
  • 185.17.255.0/24 (256 addresses (/24 prefix))
  • 193.33.221.0/24 (256 addresses (/24 prefix))
  • 5.10.251.0/24 (256 addresses (/24 prefix))
  • 185.58.2.0/24 (256 addresses (/24 prefix))
  • 154.46.30.0/24 (256 addresses (/24 prefix))
  • 185.133.33.0/24 (256 addresses (/24 prefix))
  • 154.13.149.0/24 (256 addresses (/24 prefix))
  • 114.69.227.0/24 (256 addresses (/24 prefix))
  • 185.197.165.0/24 (256 addresses (/24 prefix))
  • 95.156.195.0/24 (256 addresses (/24 prefix))
  • 185.210.137.0/24 (256 addresses (/24 prefix))
  • 188.92.0.0/24 (256 addresses (/24 prefix))
  • 193.33.155.0/24 (256 addresses (/24 prefix))
  • 168.80.34.0/24 (256 addresses (/24 prefix))
  • 193.34.71.0/24 (256 addresses (/24 prefix))
  • 94.247.213.0/24 (256 addresses (/24 prefix))
  • 193.108.168.0/24 (256 addresses (/24 prefix))
  • 85.137.31.0/24 (256 addresses (/24 prefix))
  • 80.91.79.0/24 (256 addresses (/24 prefix))
  • 195.190.9.0/24 (256 addresses (/24 prefix))
  • 196.16.220.0/24 (256 addresses (/24 prefix))
  • 196.17.228.0/24 (256 addresses (/24 prefix))
  • 212.23.211.0/24 (256 addresses (/24 prefix))
  • 38.19.198.0/24 (256 addresses (/24 prefix))
  • 5.154.181.0/24 (256 addresses (/24 prefix))
  • 5.132.158.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (16 total)

  • 2a02:fb00::/29
  • 2a07:b800::/29
  • 2a0a:7bc0::/32
  • 2a01:7e0::/32
  • 2001:1638::/32
  • 2a09:4d46::/32
  • 2001:1608::/32
  • 2a0a:7bc7::/32
  • 2a03:ebc0:5000::/36
  • 2a0e:57c0:400::/38
  • 2a0d:3c0::/40
  • 2a03:aae0:fc00::/47
  • 2a03:aae0:fc::/48