74.199.128.0/17 - GTT BACKBONE GTT Communications (AS3257)
CIDR
74.199.128.0/17
IP Version
IPv4
Addresses
32.7K
Mask
/17 (255.255.128.0)
Country
🇺🇸 United States
City
McLean
RIR
ARIN
Status
allocated
Allocated
2008-06-12
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 74.199.128.0/17 | AS3257 GTT-BACKBONE GTT Communications Inc. | No ROA | ARIN | 2026-10-11 |
More-Specific Announcements
7 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 74.199.143.0/24 | AS3257 GTT-BACKBONE GTT Communications Inc. | No ROA | - | 2026-10-11 |
| 74.199.160.0/23 | AS46281 WI-FIVE-BROADBAND - Wi-Five Broadband | No ROA | - | 2026-10-11 |
| 74.199.162.0/23 | AS46281 WI-FIVE-BROADBAND - Wi-Five Broadband | No ROA | - | 2026-10-11 |
| 74.199.188.0/24 | AS20001 TWC-20001-PACWEST - Charter Communications Inc | Valid | - | 2026-10-11 |
| 74.199.189.0/24 | AS20001 TWC-20001-PACWEST - Charter Communications Inc | Valid | - | 2026-10-11 |
| 74.199.198.0/24 | AS46401 OMNISYNC-NETWORKS - OmniSync Networks | Valid | - | 2026-10-11 |
| 74.199.199.0/24 | AS46401 OMNISYNC-NETWORKS - OmniSync Networks | Valid | - | 2026-10-11 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS3257 | ARIN | MNT-GAL-104 | 2026-09-15 |
Transfer History
Registry transfers of 74.199.128.0/17, blocks inside it, or blocks containing it.
- 74.199.128.0/17M&A ·
- 74.199.128.0/17M&A ·
Related Prefixes
Geolocation
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/74.199.128.0/17Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/74.199.128.0/17" | jq
External Links