Summary

ASN	AS40831 Mass General Brigham Incorporated
BGP	155.52.0.0/17
IPs with RDNS	126
Hosted Domains	0
Pingable IPs	256
Router IPs	0


155.52.23.0	dfci-r-d1430-a.dfci.harvard.edu	0
155.52.23.1	dana-d12-16-231.dfci.harvard.edu	0
155.52.23.2	dana-d12-16-232.dfci.harvard.edu	0
155.52.23.3	dana-d12-16-233.dfci.harvard.edu	0
155.52.23.4	dana-d12-16-234.dfci.harvard.edu	0
155.52.23.5	dana-d12-16-235.dfci.harvard.edu	0
155.52.23.6	dana-d12-16-236.dfci.harvard.edu	0
155.52.23.7	dana-d12-16-237.dfci.harvard.edu	0
155.52.23.8	dana-d12-16-238.dfci.harvard.edu	0
155.52.23.9	dana-d12-16-239.dfci.harvard.edu	0
155.52.23.10	dana-d12-16-2310.dfci.harvard.edu	0
155.52.23.11	dana-d12-16-2311.dfci.harvard.edu	0
155.52.23.12	dana-d12-16-2312.dfci.harvard.edu	0
155.52.23.13	dana-d12-16-2313.dfci.harvard.edu	0
155.52.23.14	—	0
155.52.23.15	—	0
155.52.23.16	prp003961prs.dfci.harvard.edu	0
155.52.23.17	npidf2ac3.dfci.harvard.edu	0
155.52.23.18	—	0
155.52.23.19	npi8895b8.dfci.harvard.edu	0
155.52.23.20	w0040214-155052023020.dfci.harvard.edu	0
155.52.23.21	—	0
155.52.23.22	acer-c2d0f03b5f.dfci.harvard.edu	0
155.52.23.23	—	0
155.52.23.24	—	0
155.52.23.25	—	0
155.52.23.26	bev-27imac.dfci.harvard.edu	0
155.52.23.27	w0043834.dfci.harvard.edu	0
155.52.23.28	—	0
155.52.23.29	—	0
155.52.23.30	—	0
155.52.23.31	larger-t.dfci.harvard.edu	0
155.52.23.32	w0100334.dfci.harvard.edu	0
155.52.23.33	—	0
155.52.23.34	—	0
155.52.23.35	sequenomrt.dfci.harvard.edu	0
155.52.23.36	stuart-orkin-s-computer.dfci.harvard.edu	0
155.52.23.37	valued-d3f7d0d1.dfci.harvard.edu	0
155.52.23.38	—	0
155.52.23.39	npi37d10a.dfci.harvard.edu	0
155.52.23.40	—	0
155.52.23.41	w0043083.dfci.harvard.edu	0
155.52.23.42	w0041951.dfci.harvard.edu	0
155.52.23.43	—	0
155.52.23.44	—	0
155.52.23.45	dbvqw03j.dfci.harvard.edu	0
155.52.23.46	—	0
155.52.23.47	—	0
155.52.23.48	sequenomrt.partners.org	0
155.52.23.49	sgi-d1410.dfci.harvard.edu	0
155.52.23.50	amys-mbp-xp.dfci.harvard.edu	0
155.52.23.51	godard.dfci.harvard.edu	0
155.52.23.52	tempdemo.dfci.harvard.edu	0
155.52.23.53	w043624.dfci.harvard.edu	0
155.52.23.54	w0043624.dfci.harvard.edu	0
155.52.23.55	75989.dfci.harvard.edu	0
155.52.23.56	—	0
155.52.23.57	1454-g5.dfci.harvard.edu	0
155.52.23.58	—	0
155.52.23.59	—	0
155.52.23.60	anya.dfci.harvard.edu	0
155.52.23.61	—	0
155.52.23.62	—	0
155.52.23.63	—	0
155.52.23.64	wouter-vaio.dfci.harvard.edu	0
155.52.23.65	—	0
155.52.23.66	—	0
155.52.23.67	—	0
155.52.23.68	tecan_pc.dfci.harvard.edu	0
155.52.23.69	—	0
155.52.23.70	—	0
155.52.23.71	—	0
155.52.23.72	—	0
155.52.23.73	—	0
155.52.23.74	—	0
155.52.23.75	—	0
155.52.23.76	74229.dfci.harvard.edu	0
155.52.23.77	—	0
155.52.23.78	—	0
155.52.23.79	—	0
155.52.23.80	w0041130.dfci.harvard.edu	0
155.52.23.81	—	0
155.52.23.82	—	0
155.52.23.83	npi325b9f.dfci.harvard.edu	0
155.52.23.84	udp350669uds.dfci.harvard.edu	0
155.52.23.85	w0119945.dfci.harvard.edu	0
155.52.23.86	dolores-udp920179uds.dfci.harvard.edu	0
155.52.23.87	—	0
155.52.23.88	—	0
155.52.23.89	w0061049.dfci.harvard.edu	0
155.52.23.90	—	0
155.52.23.91	df7ylz91.dfci.harvard.edu	0
155.52.23.92	d6pd9vk1.dfci.harvard.edu	0
155.52.23.93	arina-4f8e56e73.dfci.harvard.edu	0
155.52.23.94	hp91432167313.dfci.harvard.edu	0
155.52.23.95	—	0
155.52.23.96	—	0
155.52.23.97	phsprinters6-74266.dfci.harvard.edu	0
155.52.23.98	cpq31473119131.dfci.harvard.edu	0
155.52.23.99	hp17417283881.dfci.harvard.edu	0
155.52.23.100	damian.dfci.harvard.edu	0
155.52.23.101	74291.dfci.harvard.edu	0
155.52.23.102	w0041559.dfci.harvard.edu	0
155.52.23.103	office-kwlab.dfci.harvard.edu	0
155.52.23.104	—	0
155.52.23.105	—	0
155.52.23.106	w0119035.dfci.harvard.edu	0
155.52.23.107	—	0
155.52.23.108	npi958020.dfci.harvard.edu	0
155.52.23.109	—	0
155.52.23.110	wsp009456wss.dfci.harvard.edu	0
155.52.23.111	otp001206ots.dfci.harvard.edu	0
155.52.23.112	—	0
155.52.23.113	w0117017.dfci.harvard.edu	0
155.52.23.114	—	0
155.52.23.115	—	0
155.52.23.116	—	0
155.52.23.117	—	0
155.52.23.118	—	0
155.52.23.119	—	0
155.52.23.120	—	0
155.52.23.121	—	0
155.52.23.122	ddz78zk1.dfci.harvard.edu	0
155.52.23.123	mikes-imac-2.dfci.harvard.edu	0
155.52.23.124	—	0
155.52.23.125	npi3590aa.dfci.harvard.edu	0
155.52.23.126	—	0
155.52.23.127	w0044236.dfci.harvard.edu	0
155.52.23.128	w0040377.dfci.harvard.edu	0
155.52.23.129	—	0
155.52.23.130	—	0
155.52.23.131	w0048274.dfci.harvard.edu	0
155.52.23.132	orkinoffice.dfci.harvard.edu	0
155.52.23.133	—	0
155.52.23.134	—	0
155.52.23.135	—	0
155.52.23.136	npi41863d.dfci.harvard.edu	0
155.52.23.137	—	0
155.52.23.138	rks-imac.dfci.harvard.edu	0
155.52.23.139	robot.dfci.harvard.edu	0
155.52.23.140	pcp149184pcs.dfci.harvard.edu	0
155.52.23.141	—	0
155.52.23.142	w0105676.dfci.harvard.edu	0
155.52.23.143	—	0
155.52.23.144	w0048646.dfci.harvard.edu	0
155.52.23.145	—	0
155.52.23.146	w0043727.dfci.harvard.edu	0
155.52.23.147	dhvqw881.dfci.harvard.edu	0
155.52.23.148	—	0
155.52.23.149	w0048051.dfci.harvard.edu	0
155.52.23.150	76486.dfci.harvard.edu	0
155.52.23.151	w0050455w.dfci.harvard.edu	0
155.52.23.152	w0101381.dfci.harvard.edu	0
155.52.23.153	acer-c2d0f03b5f.dfci.harvard.edu	0
155.52.23.154	w0040750.dfci.harvard.edu	0
155.52.23.155	—	0
155.52.23.156	w0042245.dfci.harvard.edu	0
155.52.23.157	—	0
155.52.23.158	—	0
155.52.23.159	kai-pc.dfci.harvard.edu	0
155.52.23.160	—	0
155.52.23.161	w0042124.dfci.harvard.edu	0
155.52.23.162	novina-time-capsule.dfci.harvard.edu	0
155.52.23.163	w0042544.dfci.harvard.edu	0
155.52.23.164	csc012899-0.dfci.harvard.edu	0
155.52.23.165	—	0
155.52.23.166	w0042285.dfci.harvard.edu	0
155.52.23.167	w0041090.dfci.harvard.edu	0
155.52.23.168	—	0
155.52.23.169	w0043832.dfci.harvard.edu	0
155.52.23.170	sequenomdb.dfci.harvard.edu	0
155.52.23.171	macintosh.dfci.harvard.edu	0
155.52.23.172	w0043623.dfci.harvard.edu	0
155.52.23.173	hp20737278682.dfci.harvard.edu	0
155.52.23.174	—	0
155.52.23.175	w0040432.dfci.harvard.edu	0
155.52.23.176	dfci-d12497a390.partners.org	0
155.52.23.177	haozhang-dfci.dfci.harvard.edu	0
155.52.23.178	dhcp-155-52-23-178.dfci.harvard.edu	0
155.52.23.179	—	0
155.52.23.180	—	0
155.52.23.181	w0105102.dfci.harvard.edu	0
155.52.23.182	admins-imac.dfci.harvard.edu	0
155.52.23.183	dhcp-155-52-23-183.dfci.harvard.edu	0
155.52.23.184	jdo.dfci.harvard.edu	0
155.52.23.185	w0041155.dfci.harvard.edu	0
155.52.23.186	—	0
155.52.23.187	—	0
155.52.23.188	—	0
155.52.23.189	dana-16e46a7ecc.dfci.harvard.edu	0
155.52.23.190	csc-dana1643.dfci.harvard.edu	0
155.52.23.191	—	0
155.52.23.192	—	0
155.52.23.193	—	0
155.52.23.194	—	0
155.52.23.195	—	0
155.52.23.196	—	0
155.52.23.197	—	0
155.52.23.198	—	0
155.52.23.199	—	0
155.52.23.200	prp002280prs.dfci.harvard.edu	0
155.52.23.201	—	0
155.52.23.202	—	0
155.52.23.203	—	0
155.52.23.204	—	0
155.52.23.205	—	0
155.52.23.206	—	0
155.52.23.207	—	0
155.52.23.208	—	0
155.52.23.209	—	0
155.52.23.210	—	0
155.52.23.211	—	0
155.52.23.212	—	0
155.52.23.213	—	0
155.52.23.214	—	0
155.52.23.215	—	0
155.52.23.216	—	0
155.52.23.217	—	0
155.52.23.218	—	0
155.52.23.219	—	0
155.52.23.220	—	0
155.52.23.221	—	0
155.52.23.222	—	0
155.52.23.223	—	0
155.52.23.224	—	0
155.52.23.225	—	0
155.52.23.226	—	0
155.52.23.227	—	0
155.52.23.228	—	0
155.52.23.229	—	0
155.52.23.230	giorgias-imac.dfci.harvard.edu	0
155.52.23.231	hp15995251147.dfci.harvard.edu	0
155.52.23.232	—	0
155.52.23.233	—	0
155.52.23.234	w0040705.dfci.harvard.edu	0
155.52.23.235	—	0
155.52.23.236	—	0
155.52.23.237	lxk48feb9-udp923669uds.dfci.harvard.edu	0
155.52.23.238	w0040374.dfci.harvard.edu	0
155.52.23.239	w0041583.dfci.harvard.edu	0
155.52.23.240	w0041153.dfci.harvard.edu	0
155.52.23.241	w0024841w.dfci.harvard.edu	0
155.52.23.242	w0041413.dfci.harvard.edu	0
155.52.23.243	w0044273.dfci.harvard.edu	0
155.52.23.244	npi777292.dfci.harvard.edu	0
155.52.23.245	—	0
155.52.23.246	1555inverted.dfci.harvard.edu	0
155.52.23.247	76478.dfci.harvard.edu	0
155.52.23.248	facs-d14.dfci.harvard.edu	0
155.52.23.249	w0040810.dfci.harvard.edu	0
155.52.23.250	—	0
155.52.23.251	—	0
155.52.23.252	—	0
155.52.23.253	—	0
155.52.23.254	—	0
155.52.23.255	—	0

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -m4 155.52.23.39

traceroute to 155.52.23.39 (155.52.23.39): 4 hops max, 52 byte packets

1 [AS136258] 103.97.203.1 1.698 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Mumbai, IN

On November 22nd 2025