Department of Homeland Security
AS396973 is Department of Homeland Security (dhs.gov). It announces 1,792 IPv4 addresses in 7 prefixes, and 2 IPv6 prefixes.
United States· ARIN· allocated 2018-08-06· government
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States1,792 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- DHS-39H
- name
- Department of Homeland Security
- org
- DHS-39
- org name
- Department of Homeland Security
- org address
- 1110 North Glebe Road, Arlington, VA, 22201
- org city
- Arlington
- org country
- US
- country
- US
- source
- arin
- created
- 2018-08-06
- updated
- 2018-08-06
- abuse name
- Jeremy DeLong
- abuse email
- jeremy.delong@cisa.dhs.gov
- abuse phone
- +1-850-307-7275
- abuse kind
- person
- abuse city
- Pensacola
- abuse country
- US
- admin name
- anh-thu lam
- admin email
- anh.lam@mail.cisa.dhs.gov
- admin phone
- +1-202-394-5951
- admin kind
- person
- admin city
- Arlington
- admin country
- US
- tech name
- Ali Ibrahim
- tech email
- ali.h.ibrahim@associates.cbp.dhs.gov
- tech phone
- +1-315-516-1151
- tech kind
- person
- tech city
- Springfield
- tech country
- US
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- None here
- anyip0.06%
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 208.73.184.0/24 | United States | valid | 18 | 2026-10-02 |
| 208.73.186.0/24 | United States | valid | 18 | 2026-10-02 |
| 208.73.187.0/24 | United States | valid | 18 | 2026-10-02 |
| 208.73.188.0/24 | United States | valid | 18 | 2026-10-02 |
| 208.73.189.0/24 | United States | valid | 18 | 2026-10-02 |
| 208.73.190.0/24 | United States | valid | 18 | 2026-10-02 |
| 208.73.191.0/24 | United States | valid | 18 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2620:112:5004::/48 | United States | valid | 20 | 2026-10-02 |
| 2620:112:5005::/48 | United States | valid | 20 | 2026-10-02 |
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.