IPv4 R&E Routing Table Report 23:05 GMT Thu 02 Oct, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1003405 Prefixes after maximum aggregation (per Origin AS): 389482 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495930 Number of IPv4 prefixes with a valid ROA: 574134 Number of IPv4 prefixes with an invalid ROA: 759 Number of IPv4 prefixes with no ROA: 428512 Total ASes present in the Internet Routing Table: 77269 Prefixes per ASN: 12.99 Origin-only ASes present in the Internet Routing Table: 66214 Origin ASes announcing only one prefix: 27025 Transit ASes present in the Internet Routing Table: 11055 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1032 Number of instances of unregistered ASNs: 1062 Number of 32-bit ASNs allocated by the RIRs: 47612 Number of 32-bit ASNs visible in the Routing Table: 39028 Prefixes from 32-bit ASNs in the Routing Table: 211907 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 429 Number of addresses announced to Internet: 3111739904 Equivalent to 185 /8s, 121 /16s and 98 /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: 327003 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269224 Total APNIC prefixes after maximum aggregation: 79470 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259109 Unique aggregates announced from the APNIC address blocks: 105817 APNIC Region origin ASes present in the Internet Routing Table: 14769 APNIC Prefixes per ASN: 17.54 APNIC Region origin ASes announcing only one prefix: 4465 APNIC Region transit ASes present in the Internet Routing Table: 1985 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10348 Number of APNIC addresses announced to Internet: 751079680 Equivalent to 44 /8s, 196 /16s and 145 /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: 293768 Total ARIN prefixes after maximum aggregation: 133651 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295231 Unique aggregates announced from the ARIN address blocks: 142896 ARIN Region origin ASes present in the Internet Routing Table: 19287 ARIN Prefixes per ASN: 15.31 ARIN Region origin ASes announcing only one prefix: 7081 ARIN Region transit ASes present in the Internet Routing Table: 1934 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 49 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5340 Number of ARIN addresses announced to Internet: 1352768256 Equivalent to 80 /8s, 161 /16s and 155 /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, 393216-402332 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: 279507 Total RIPE prefixes after maximum aggregation: 138352 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279060 Unique aggregates announced from the RIPE address blocks: 180704 RIPE Region origin ASes present in the Internet Routing Table: 29061 RIPE Prefixes per ASN: 9.60 RIPE Region origin ASes announcing only one prefix: 12095 RIPE Region transit ASes present in the Internet Routing Table: 4023 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12747 Number of RIPE addresses announced to Internet: 732916736 Equivalent to 43 /8s, 175 /16s and 108 /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: 124951 Total LACNIC prefixes after maximum aggregation: 30469 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 121181 Unique aggregates announced from the LACNIC address blocks: 49505 LACNIC Region origin ASes present in the Internet Routing Table: 11298 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2668 LACNIC Region transit ASes present in the Internet Routing Table: 2535 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9262 Number of LACNIC addresses announced to Internet: 170804736 Equivalent to 10 /8s, 46 /16s and 70 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 34923 Total AfriNIC prefixes after maximum aggregation: 6850 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 48395 Unique aggregates announced from the AfriNIC address blocks: 16628 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 24.60 AfriNIC Region origin ASes announcing only one prefix: 716 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1331 Number of AfriNIC addresses announced to Internet: 103935744 Equivalent to 6 /8s, 49 /16s and 239 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4513 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3958 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3725 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3121 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2925 862 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2355 505 1507 HUTCHISON-AS-AP HGC Global Communications Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14299 40897 5393 AMAZON-02, US 11492 4749 320 793 CABLEONE, US 22773 3973 3049 336 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3679 1320 82 SHAW, CA 396982 3274 4824 462 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 174 3169 8766 860 COGENT-174, US 4155 3085 239 1710 USDA-1, US 16625 2906 1235 2174 AKAMAI-AS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7438 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3985 374 2240 M247, RO 20940 3911 3395 124 AKAMAI-ASN1, NL 12389 3124 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2456 174 1780 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 1889 203 906 HOSTROYALE, IN 8452 1628 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12387 3280 577 UNINET, MX 10620 3504 474 1047 Telmex Colombia S.A., CO 13999 2541 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1367 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1064 68 349 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2486 56 TIM SA, BR 11664 964 278 32 Techtel LMDS Comunicaciones Interactivas Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1770 616 28 RAYA-AS, EG 36992 1509 1498 384 ETISALAT-MISR, EG 29571 1283 102 53 ORANGE-COTE-IVOIRE, CI 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 36935 950 520 42 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 82 3 KENET-AS, KE 15399 550 56 54 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14299 40897 5393 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12387 3280 577 UNINET, MX 12479 7438 1711 149 UNI2-AS, ES 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4749 320 793 CABLEONE, US 18403 4513 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 9009 3985 374 2240 M247, RO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13670 13554 CHINAMOBILE-CN China Mobile Communications Grou 8151 12387 11810 UNINET, MX 12479 7438 7289 UNI2-AS, ES 7545 6183 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4513 4487 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4749 3956 CABLEONE, US 7552 3958 3930 VIETEL-AS-AP Viettel Group, VN 20940 3911 3787 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.146.140.0/24 Origin: 7029 WINDSTREAM, US 23.146.140.0/24 Transit: 6453 AS6453, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 /10:41 /11:93 /12:301 /13:579 /14:1198 /15:2124 /16:13750 /17:8140 /18:13378 /19:24508 /20:44178 /21:51697 /22:112265 /23:103633 /24:627490 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6601 12387 UNINET, MX 12479 6401 7438 UNI2-AS, ES 11492 3562 4749 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3467 3679 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2522 3973 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2412 14299 AMAZON-02, US 30036 2289 2629 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2222 3504 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2429 2:1519 3:944 4:10 5:4843 6:169 7:6 8:1528 9:6 11:172 12:1242 13:567 14:2637 15:402 16:304 17:389 18:906 20:574 21:4 22:188 23:7852 24:2648 25:2 27:2784 29:19 31:3340 32:31 33:1 34:84 35:272 36:4460 37:4547 38:9517 39:1089 40:296 41:4356 42:2002 43:2777 44:385 45:18975 46:5181 47:342 49:2025 50:2043 51:593 52:1593 54:359 55:1163 56:11 57:283 58:2284 59:1336 60:1188 61:2954 62:3082 63:1761 64:5657 65:2142 66:4925 67:3100 68:1093 69:3922 70:1044 71:630 72:2973 74:2824 75:1494 76:597 77:2774 78:1897 79:1754 80:2248 81:2112 82:3441 83:1473 84:1980 85:3513 86:1102 87:2122 88:1323 89:4493 90:808 91:8385 92:2784 93:2980 94:4168 95:4463 96:1471 97:310 98:952 99:741 100:71 101:1476 102:4142 103:32841 104:5356 105:769 106:895 107:2651 108:1204 109:4217 110:2254 111:3777 112:2650 113:1855 114:1993 115:2300 116:2096 117:2941 118:3054 119:1958 120:2260 121:1346 122:2812 123:2292 124:1708 125:2909 126:93 128:1566 129:957 130:1269 131:2131 132:781 133:461 134:1603 135:365 136:1490 137:1119 138:2800 139:1601 140:1639 141:1547 142:2036 143:2054 144:1271 145:627 146:2176 147:2118 148:2739 149:2907 150:1283 151:2544 152:2169 153:577 154:7394 155:2054 156:3461 157:2008 158:1420 159:2592 160:3569 161:1990 162:3941 163:2301 164:2122 165:2575 166:1559 167:2100 168:3825 169:775 170:5359 171:1018 172:4233 173:3405 174:909 175:1355 176:3802 177:4744 178:4265 179:2306 180:2764 181:4259 182:3725 183:2550 184:2052 185:21652 186:5374 187:4702 188:4312 189:4413 190:9700 191:1550 192:11374 193:9472 194:7793 195:5577 196:3247 197:3344 198:6078 199:8751 200:8084 201:6351 202:10427 203:10556 204:4581 205:3611 206:4510 207:3552 208:4285 209:5296 210:4702 211:2683 212:4795 213:3883 214:1033 215:52 216:6888 217:3346 218:1564 219:396 220:2190 221:1234 222:750 223:3031 End of report