209.166.0.0/18 - GTT BACKBONE GTT Communications (AS3257)
CIDR
209.166.0.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇩🇪 Germany
City
Frankfurt/Main
RIR
ARIN
Status
allocated
Allocated
1997-12-10
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 209.166.0.0/18 | AS3257 GTT-BACKBONE GTT Communications Inc. | No ROA | Other IRR | 2026-10-12 |
More-Specific Announcements
33 more-specific announcementsIRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS3257 | Other IRR | MAINT-AS3257 | 2025-04-11 |
Transfer History
Registry transfers of 209.166.0.0/18, blocks inside it, or blocks containing it.
- 209.166.0.0/18M&A ·
- 209.166.0.0/18M&A ·
Related Prefixes
More prefixes of AS3257
All prefixes of AS3257 →Geolocation
Country🇩🇪GermanyDE
CityFrankfurt/Main
Abuse Contact
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/209.166.0.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/209.166.0.0/18" | jq
External Links