This is an automated weekly mailing describing the state of the IPv4 Research & Education Routing Table received by NSRC's collector from Guam's network. Daily listings are sent to ren-bgp-stats-all@lists.nsrc.org. For historical data, please see https://bgp.nsrc.org. If you have any comments please contact Philip Smith . IPv4 R&E Routing Table Report 21:25 GMT Sat 23 May, 2026 IPv4 BGP Table (Global) as seen at Guam. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Guam/ Analysis Summary ---------------- BGP routing table entries examined: 1078974 Prefixes after maximum aggregation (per Origin AS): 403669 Deaggregation factor: 2.67 Unique aggregates announced (without unneeded subnets): 517563 Number of IPv4 prefixes with a valid ROA: 674529 Number of IPv4 prefixes with an invalid ROA: 22 Number of IPv4 prefixes with no ROA: 404423 Total ASes present in the Internet Routing Table: 78646 Prefixes per ASN: 13.72 Origin-only ASes present in the Internet Routing Table: 67296 Origin ASes announcing only one prefix: 27123 Transit ASes present in the Internet Routing Table: 11350 Transit-only ASes present in the Internet Routing Table: 590 Paths with bogon ASNs present in the IPv4 Routing Table: 50 Average AS path length visible in the Internet Routing Table: 5.5 Max AS path length visible: 215 Max AS path prepend of ASN (205624) 210 Prefixes from unregistered ASNs in the Routing Table: 1132 Number of instances of unregistered ASNs: 1162 Number of 32-bit ASNs allocated by the RIRs: 49879 Number of 32-bit ASNs visible in the Routing Table: 40736 Prefixes from 32-bit ASNs in the Routing Table: 238875 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 334 Number of addresses announced to Internet: 3109502338 Equivalent to 185 /8s, 87 /16s and 61 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 353458 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 296834 Total APNIC prefixes after maximum aggregation: 84128 APNIC Deaggregation factor: 3.53 Prefixes being announced from the APNIC address blocks: 283588 Unique aggregates announced from the APNIC address blocks: 108001 APNIC Region origin ASes present in the Internet Routing Table: 15279 APNIC Prefixes per ASN: 18.56 APNIC Region origin ASes announcing only one prefix: 4650 APNIC Region transit ASes present in the Internet Routing Table: 2076 Average APNIC Region AS path length visible: 5.5 Max APNIC Region AS path length visible: 44 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10818 Number of APNIC addresses announced to Internet: 752853056 Equivalent to 44 /8s, 223 /16s and 160 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 306688 Total ARIN prefixes after maximum aggregation: 137101 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 305251 Unique aggregates announced from the ARIN address blocks: 147806 ARIN Region origin ASes present in the Internet Routing Table: 19441 ARIN Prefixes per ASN: 15.70 ARIN Region origin ASes announcing only one prefix: 7119 ARIN Region transit ASes present in the Internet Routing Table: 1988 Average ARIN Region AS path length visible: 4.9 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5594 Number of ARIN addresses announced to Internet: 1348294402 Equivalent to 80 /8s, 93 /16s and 87 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-404380 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 293616 Total RIPE prefixes after maximum aggregation: 143717 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 297022 Unique aggregates announced from the RIPE address blocks: 191737 RIPE Region origin ASes present in the Internet Routing Table: 29548 RIPE Prefixes per ASN: 10.05 RIPE Region origin ASes announcing only one prefix: 12212 RIPE Region transit ASes present in the Internet Routing Table: 4101 Average RIPE Region AS path length visible: 5.7 Max RIPE Region AS path length visible: 215 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13467 Number of RIPE addresses announced to Internet: 734130304 Equivalent to 43 /8s, 193 /16s and 240 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 139056 Total LACNIC prefixes after maximum aggregation: 30917 LACNIC Deaggregation factor: 4.50 Prefixes being announced from the LACNIC address blocks: 133315 Unique aggregates announced from the LACNIC address blocks: 50347 LACNIC Region origin ASes present in the Internet Routing Table: 11418 LACNIC Prefixes per ASN: 11.68 LACNIC Region origin ASes announcing only one prefix: 2465 LACNIC Region transit ASes present in the Internet Routing Table: 2606 Average LACNIC Region AS path length visible: 5.9 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9454 Number of LACNIC addresses announced to Internet: 169743552 Equivalent to 10 /8s, 30 /16s and 20 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 41648 Total AfriNIC prefixes after maximum aggregation: 7157 AfriNIC Deaggregation factor: 5.82 Prefixes being announced from the AfriNIC address blocks: 59464 Unique aggregates announced from the AfriNIC address blocks: 19384 AfriNIC Region origin ASes present in the Internet Routing Table: 2041 AfriNIC Prefixes per ASN: 29.13 AfriNIC Region origin ASes announcing only one prefix: 677 AfriNIC Region transit ASes present in the Internet Routing Table: 397 Average AfriNIC Region AS path length visible: 6.1 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1403 Number of AfriNIC addresses announced to Internet: 104316416 Equivalent to 6 /8s, 55 /16s and 190 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 14098 9121 156 CHINAMOBILE-CN China Mobile Communication 7545 5872 825 473 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4939 551 322 BBIL-AP BHARTI Airtel Ltd., IN 4538 4815 4192 73 ERX-CERNET-BKB China Education and Resear 18403 4547 347 25 FPT-AP FPT Telecom Company, VN 45899 4467 1873 54 VNPT-AS-VN VNPT Corp, VN 7552 4064 1331 26 VIETEL-AS-AP Viettel Group, VN 7713 3697 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3686 907 227 CMNET-JIANGSU-AP China Mobile communicati 17561 3469 218 603 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/Guam/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14999 41427 5720 AMAZON-02 - Amazon.com, Inc., US 22773 4764 3098 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4593 305 1087 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 174 3724 8757 842 COGENT-174 - Cogent Communications, LLC, 6327 3717 1305 74 SHAW - Shaw Communications, CA 396982 3348 4865 503 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 3056 231 1027 AS-COLOCROSSING - HostPapa, US 7029 2625 2540 885 WINDSTREAM - Windstream Communications LL Complete listing at https://bgp.nsrc.org/REN/Guam/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7132 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 4066 371 2469 M247, RO 20940 3819 3389 110 AKAMAI-ASN1, NL 12389 3171 2319 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2798 206 2065 CDNEXT, GB 34984 2489 367 583 TELLCOM-AS, TR 8452 1723 1852 17 TE-AS TE-AS, EG 203020 1653 252 829 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Guam/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12755 3254 631 UNINET, MX 10620 3432 450 1101 Telmex Colombia S.A., CO 13999 2343 500 362 Mega Cable, S.A. de C.V., MX 11830 1935 369 65 Instituto Costarricense de Electricidad y 28573 1578 2431 268 Claro NXT Telecomunicacoes Ltda, BR 11664 1471 277 34 Techtel LMDS Comunicaciones Interactivas 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1224 371 22 INTEGRATEL PERU S.A.A., PE 22884 1077 71 364 TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. D 26615 1073 2392 100 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/Guam/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 2028 649 36 RAYA-AS, EG 36992 1860 1532 337 ETISALAT-MISR, EG 37457 1659 385 28 Telkom-Internet, ZA 20011 1289 191 315 NTT-DATA-Inc, ZA 36935 1275 521 43 Vodafone-, EG 24863 1257 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1085 70 18 ORANGE-COTE-IVOIRE, CI 328608 639 58 171 Africa-on-Cloud-AS, ZA Complete listing at https://bgp.nsrc.org/REN/Guam/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14999 41427 5720 AMAZON-02 - Amazon.com, Inc., US 9808 14098 9121 156 CHINAMOBILE-CN China Mobile Communication 8151 12755 3254 631 UNINET, MX 12479 7132 1711 149 UNI2-AS, ES 7545 5872 825 473 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4939 551 322 BBIL-AP BHARTI Airtel Ltd., IN 4538 4815 4192 73 ERX-CERNET-BKB China Education and Resear 22773 4764 3098 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4593 305 1087 CABLEONE - CABLE ONE, INC., US Complete listing at https://bgp.nsrc.org/REN/Guam/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 14098 13942 CHINAMOBILE-CN China Mobile Communications Grou 8151 12755 12124 UNINET, MX 12479 7132 6983 UNI2-AS, ES 7545 5872 5399 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 4538 4815 4742 ERX-CERNET-BKB China Education and Research Net 9498 4939 4617 BBIL-AP BHARTI Airtel Ltd., IN 18403 4547 4522 FPT-AP FPT Telecom Company, VN 45899 4467 4413 VNPT-AS-VN VNPT Corp, VN 22773 4764 4400 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Complete listing at https://bgp.nsrc.org/REN/Guam/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 46198 UNALLOCATED 8.10.6.0/24 23520 LIBERTY-NETWORKS - Colu 46198 UNALLOCATED 8.10.7.0/24 23520 LIBERTY-NETWORKS - Colu 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 400273 UNALLOCATED 8.41.137.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com Complete listing at https://bgp.nsrc.org/REN/Guam/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE - Hurricane Electric LLC, US Complete listing at https://bgp.nsrc.org/REN/Guam/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.131.100.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.156.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.212.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 3605 ERX-KUENTOS-AS Guam Cablevision, LLC., G Complete listing at https://bgp.nsrc.org/REN/Guam/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:95 /12:299 /13:584 /14:1191 /15:2115 /16:13743 /17:8512 /18:14031 /19:26404 /20:47781 /21:53839 /22:115483 /23:114016 /24:680095 /25:75 /26:84 /27:110 /28:36 /29:62 /30:9 /31:3 /32:338 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6976 12755 UNINET, MX 12479 6068 7132 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3498 3717 SHAW - Shaw Communications, CA 11492 3469 4593 CABLEONE - CABLE ONE, INC., US 22773 3063 4764 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2721 14999 AMAZON-02 - Amazon.com, Inc., US 10620 2236 3432 Telmex Colombia S.A., CO 30036 2235 2580 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US Complete listing at https://bgp.nsrc.org/REN/Guam/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2582 2:2045 3:998 4:7 5:5223 6:203 7:6 8:1508 9:63 11:172 12:1130 13:695 14:2791 15:467 16:215 17:444 18:920 20:634 21:4 22:188 23:8402 24:2776 25:2 27:2873 28:1 29:19 31:3625 32:40 34:92 35:288 36:4814 37:4477 38:10889 39:1310 40:412 41:4720 42:2198 43:3289 44:457 45:20739 46:4996 47:435 48:157 49:2298 50:2026 51:837 52:1334 54:282 55:1103 56:11 57:330 58:2595 59:1604 60:1184 61:3422 62:3192 63:1683 64:6400 65:2154 66:6146 67:3274 68:1517 69:4225 70:1056 71:617 72:3184 74:3087 75:1501 76:598 77:2946 78:2053 79:1816 80:2386 81:2292 82:4183 83:1464 84:2168 85:3859 86:1101 87:2733 88:1324 89:4812 90:796 91:8554 92:2778 93:3043 94:4528 95:4728 96:1444 97:308 98:950 99:841 100:70 101:1654 102:5305 103:32828 104:5433 105:2320 106:940 107:2948 108:1287 109:4351 110:2301 111:4201 112:3196 113:2147 114:2561 115:2357 116:2133 117:3629 118:3115 119:2207 120:2788 121:1642 122:3064 123:2375 124:1849 125:3054 126:158 128:1596 129:1019 130:1697 131:2551 132:892 133:502 134:1724 135:614 136:1471 137:1378 138:3665 139:1784 140:1861 141:1781 142:2560 143:2114 144:1797 145:636 146:2194 147:2254 148:2793 149:3222 150:1391 151:2930 152:2358 153:1714 154:9945 155:2297 156:5160 157:2468 158:1578 159:2868 160:3913 161:1991 162:4122 163:2631 164:2472 165:2719 166:1269 167:2358 168:4209 169:892 170:5831 171:1155 172:4786 173:3462 174:886 175:1403 176:3985 177:5781 178:4444 179:2612 180:3187 181:4758 182:4065 183:2869 184:2021 185:22000 186:6646 187:5447 188:4564 189:4677 190:10113 191:2127 192:11654 193:9655 194:7982 195:6039 196:3667 197:3889 198:6166 199:6080 200:8499 201:6586 202:11215 203:10953 204:4768 205:3701 206:4483 207:3879 208:4405 209:5473 210:5244 211:2882 212:5121 213:4147 214:1040 215:47 216:7318 217:3634 218:2107 219:652 220:2321 221:1345 222:1444 223:3504 End of report