U.S. Dept. of Health and Human Services

Data as of 2026-10-18
BGP inherited
This organisation
Netblocks28 · 395,008 IPv4 addresses
IPv6 5 prefixes (largest 2601:9000::/20)
Also registered under this name 36 netblocks across 5 separate records
Record ID250157621
RegistryBGP
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 14 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (28)

⬇ export CSV
CIDR Org name Registry Status Confidence
158.70.0.0/16 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
158.70.144.0/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.71.0.0/16 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
158.71.0.0/17 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.71.128.0/18 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.71.192.0/19 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.71.192.0/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.71.225.0/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.72.0.0/16 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.72.139.0/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.73.0.0/16 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
158.74.0.0/16 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
158.74.30.0/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
158.74.35.0/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
162.99.0.0/16 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
162.99.0.0/17 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
162.99.128.0/18 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
162.99.192.0/19 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
192.73.61.0/24 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
198.102.218.0/24 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
198.179.0.0 – 198.179.4.255 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
198.179.0.0/23 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
198.179.2.0/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
2601:9000::/20 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
2601:9600::/24 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
2607:f220::/32 U.S. Dept. of Health and Human Services ARIN DIRECT ALLOCATION ● high
2607:f220::/44 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high
2607:f220:600::/44 U.S. Dept. of Health and Human Services BGP ANNOUNCED ● high

IPv6 ranges (5)

CIDR
2601:9000::/20
2601:9600::/24
2607:f220::/32
2607:f220:600::/44
2607:f220::/44

Footprint over time

17 weekly snapshots · JSON
32 +9 netblocks since 2026-07-05
2026-07-05 peak 32 2026-10-18

Other domains hosted in this network

what's this?
samhsa.gov

Network trust

what's this?
RPKI hygiene: F how networks compare →
6.2% of checked blocks have valid RPKI ROA coverage (2 of 32)
No discrepancies found among checked blocks.

NIC Handles

ABUSE5037-ARIN AS26810 CISD-ARIN GASSW-ARIN HNOC10-ARIN MILLE3252-ARIN MOXLE3-ARIN MOXLE3-ARIN MOXLE3-ARIN MOXLE3-ARIN PSC110-ARIN ROXAS9-ARIN +2 more