128.197.236.4
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Academic allocation +6
- Long-established allocation (39y) +6
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Trust score 87 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- bu.edu
- Forward-confirmed (FCrDNS)
- Not checked
- PTR TTL
- 2148 s
- Reverse DNS last checked
- 2026-10-06 21:17 UTC
Forward DNS records for bu.edu
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 128.197.236.4 | — | 3600s |
| MX | mx1.hc2706-39.iphmx.com | 5 | — |
| MX | mx2.hc2706-39.iphmx.com | 5 | — |
| NS | edns01.bu.edu | — | — |
| NS | edns02.bu.edu | — | — |
| NS | edns03.bu.edu | — | — |
| TXT | amazonses:Lvbg/4wEfqYPAg39Surgr1mR4yRKoLyNZqgEObXYgeU= | — | — |
| TXT | 406A508926329EEE1AE912BC06B33181 | — | — |
| TXT | 508486115411084033893E6796CD5A9B | — | — |
| TXT | BD0EC30CCCA95BA6791765DFAF3EB0E4 | — | — |
| TXT | BGELPNBsDxzCVsd892zu7uzc6/RS4XTHMBwfAzUDOuTGxWQ1ggk8vjNNHdbJuKLAUnYjS2GGqYKKvJCWrhWi5Q== | — | — |
| TXT | C164A899D8D6114A08B1E87BAE9AD036 | — | — |
| TXT | KP949W92GKNQ0PZ0N88XHLBEWBWBY5ME4Y9319Q9J | — | — |
| TXT | MS=ms14560947 | — | — |
| TXT | TAILSCALE-xoPhMaCbCi2oAgNoR6vU | — | — |
| TXT | ZOOM_verify_nqTarCG_Sfec5hmDYIey9w | — | — |
| TXT | ZOOM_verify_yhxVUDjfdOc4LiPKGmrwOZ | — | — |
| TXT | a4V5CxeWPi3/r5nrG/fp2mf8bI70nxWPpUhOCtaSvzU= | — | — |
| TXT | adobe-idp-site-verification=a71f2fe0-25c1-46cd-9d0f-c83d769cc464 | — | — |
| TXT | amazonses:2YQZEyFhbb+XTfTQXV7NoBA07XHUUExz73D1KJlPap8= | — | — |
| TXT | amazonses:6PZDYpsrO7QArYfeoqWB73qyPXS+YY6o4boqlo2Da3U= | — | — |
| TXT | amazonses:AwSvDmWwTx8okcatFIEnWSnq20Z9LPfd6DRCIh1vFJs= | — | — |
| TXT | amazonses:P9MFqEievVVPAd1/PX0PcTCBEOzYqYp/ix1L9lxbN40= | — | — |
| TXT | amazonses:dSjTJ5EAmNt4HCeFh5d73yXHdRAWl0hJ/4pTL7NmUD8= | — | — |
| TXT | anthropic-domain-verification-naf36v=CEFZVHy1jQpWLrBBoNOxVc9F5 | — | — |
| TXT | apple-domain-verification=xbZoF0D4CQePMvfj | — | — |
| TXT | asv=a2db9061fe2c0d8996ebab42acf37c2b | — | — |
| TXT | atlassian-domain-verification=aUzHV7Znf5W7zM9iKWIuXmQL2n3xyjLnhzctpiQ1dRDMXAAdF9wAGfQduOBpU2Jl | — | — |
| TXT | brevo-code:956c0e08c148a9770622045342757477 | — | — |
| TXT | cisco-ci-domain-verification=76b5749d7018bb6b7c5b4ff2294f07d53a130fe45d2f7883653965a062644bf7 | — | — |
| TXT | d365mktkey=7qsGu1xt2piBD6R1Tywzn8SVLsatn3NuB9MR5WReZ0ox | — | — |
| TXT | d365mktkey=M0OxizdtVNcUWXZe3yNtSjfsCAM2ye8yfml9rfIR8vYx | — | — |
| TXT | dropbox-domain-verification=z6zza3wyksbx | — | — |
| TXT | e2ma-verification=0wegb | — | — |
| TXT | google-site-verification=67INNBNCAQXRtks4u0Zt20tpzmBzJwHMN_CxcX5xz6A | — | — |
| TXT | google-site-verification=7DoOKBD8dD53G3N4o-I5jUbG_qjDxTSuZExk4p1qlY0 | — | — |
| TXT | google-site-verification=ZXAn1MfviwxydrktJiphtqacGQ6i3BJMiWaOYhE0aW4 | — | — |
| TXT | google-site-verification=qM8eaHJfQH86-_P7YBYXq_yUIgourW2SlrR_KJr8dVY | — | — |
| TXT | google-site-verification=uUBIo7rGZKIUNOEJ7yOahQe-AYkW4AwJPJrSsgQaQPE | — | — |
| TXT | google-site-verification=xmeyfQgB5dDMamBVUQr_BuUpNpqimItoXEKJ7aikqWI | — | — |
| TXT | identrust_validation=XctZJLt6/1cdhi2FoKvCewO+jAkBlZMtSzOmZ3yM5aMZ | — | — |
| TXT | identrust_validation=izRYplfXjj09O/sui/WvwGSZTi4MCrQ93v8yc3gyqrYl | — | — |
| TXT | miro-verification=377cc6659a02c6725b563adc7e39e17eaee09eb3 | — | — |
| TXT | ms-domain-verification=ba683a5e-ca58-4005-82c5-bae45c91fbbb | — | — |
| TXT | openai-domain-verification=dv-jqEdCiOFLvqVPwoC3PcpCjU3 | — | — |
| TXT | pardot192822=9820d4cb1fb8aee684785fb4ef3504834e89c2a9dc72ae85619eb2d5afe36f76 | — | — |
| TXT | pardot192822=e95b76f60f1f2dd27c11ef306f99d5472c871da9d221b2a08db5fecb618af01a | — | — |
| TXT | pardot192822=fb9c4b0ba22a7462686372773f2e521d53de40b1db0bbfed977bcf46a4ff6907 | — | — |
| TXT | pardot_192822_*=2319b3b7ba3b841329ffb670d26bccab3ddb9cf8cd0a67cdb28cbd760bb98a08 | — | — |
| TXT | v=spf1 include:%{l}.%{o}.spf.bu.edu include:_u.ondmarc.bu.edu._spf.smart.ondmarc.com ~all | — | — |
| TXT | v=verifydomain MS=ms17551242 | — | — |
| TXT | v=verifydomain MS=ms74687773 | — | — |
| TXT | yahoo-verification-key=A3O9VJ94l+a2frns/isnh9MBwLfPwVeMBgdvOb2l978= | — | — |
| CAA | issue amazon.com | 0 | — |
| CAA | issue digicert.com | 0 | — |
| CAA | issue emsign.com | 0 | — |
| CAA | issue identrust.com | 0 | — |
| CAA | issue letsencrypt.org | 0 | — |
| CAA | issue sectigo.com | 0 | — |
| CAA | issuewild amazon.com | 0 | — |
| CAA | issuewild digicert.com | 0 | — |
| CAA | issuewild emsign.com | 0 | — |
| CAA | issuewild sectigo.com | 0 | — |
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Domains hosted
as of 2026-10-04 UTC1
Registrable domains (like example.com) with at least one name resolving to this IP — counted once a week from issued.live's DNS snapshot.
Domain data provided by issued.live — for full details visit https://issued.live/pricing
Network Allocation for 128.197.236.4
- CIDR range
- 128.197.224.0/20
- IP range (int)
- 2,160,451,584 — 2,160,455,679
- Prefix length
- /20
- Organization
- Boston University
- ASN
- AS111
- ASN name
- Boston University
- Location
- Marblehead, Massachusetts, United States
- Coordinates
- 42.494700, -70.849900
- Accuracy radius
- 20 km
- Postal code
- 01945
- Regional Internet Registry
- ARIN
- Allocated
- 1987-02-04
- Data source(s)
- maxmind_city, maxmind_asn, ipinfo_lite, maxmind_country
- Last updated
- 2026-10-07 08:47:08
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
Frequently Asked Questions
Who owns 128.197.236.4?
128.197.236.4 is allocated to Boston University (AS111), registered in Marblehead, United States.
Where is 128.197.236.4 located?
The geolocation for 128.197.236.4 maps to Marblehead, United States based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.
What network is 128.197.236.4 on?
128.197.236.4 belongs to the 128.197.224.0/20 network block announced by AS111. This range contains 4,096 addresses.
Does 128.197.236.4 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
