IPv4 R&E Routing Table Report 23:05 GMT Tue 28 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: 1010824 Prefixes after maximum aggregation (per Origin AS): 392274 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498658 Number of IPv4 prefixes with a valid ROA: 582330 Number of IPv4 prefixes with an invalid ROA: 569 Number of IPv4 prefixes with no ROA: 427925 Total ASes present in the Internet Routing Table: 77419 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 66338 Origin ASes announcing only one prefix: 27092 Transit ASes present in the Internet Routing Table: 11081 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 26 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1036 Number of instances of unregistered ASNs: 1065 Number of 32-bit ASNs allocated by the RIRs: 47817 Number of 32-bit ASNs visible in the Routing Table: 39196 Prefixes from 32-bit ASNs in the Routing Table: 214558 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 432 Number of addresses announced to Internet: 3113196544 Equivalent to 185 /8s, 143 /16s and 156 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 329985 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270581 Total APNIC prefixes after maximum aggregation: 80275 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260384 Unique aggregates announced from the APNIC address blocks: 105686 APNIC Region origin ASes present in the Internet Routing Table: 14812 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4485 APNIC Region transit ASes present in the Internet Routing Table: 1999 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 42 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10389 Number of APNIC addresses announced to Internet: 751706624 Equivalent to 44 /8s, 206 /16s and 34 /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: 298362 Total ARIN prefixes after maximum aggregation: 134833 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 299275 Unique aggregates announced from the ARIN address blocks: 144736 ARIN Region origin ASes present in the Internet Routing Table: 19338 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7104 ARIN Region transit ASes present in the Internet Routing Table: 1911 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5383 Number of ARIN addresses announced to Internet: 1353696512 Equivalent to 80 /8s, 175 /16s and 197 /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: 280362 Total RIPE prefixes after maximum aggregation: 139173 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 280113 Unique aggregates announced from the RIPE address blocks: 181471 RIPE Region origin ASes present in the Internet Routing Table: 29097 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12108 RIPE Region transit ASes present in the Internet Routing Table: 4054 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12789 Number of RIPE addresses announced to Internet: 733146112 Equivalent to 43 /8s, 178 /16s and 236 /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: 125039 Total LACNIC prefixes after maximum aggregation: 30409 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121130 Unique aggregates announced from the LACNIC address blocks: 49487 LACNIC Region origin ASes present in the Internet Routing Table: 11316 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2546 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9291 Number of LACNIC addresses announced to Internet: 170689024 Equivalent to 10 /8s, 44 /16s and 130 /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: 35444 Total AfriNIC prefixes after maximum aggregation: 6894 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 49490 Unique aggregates announced from the AfriNIC address blocks: 16900 AfriNIC Region origin ASes present in the Internet Routing Table: 1980 AfriNIC Prefixes per ASN: 24.99 AfriNIC Region origin ASes announcing only one prefix: 723 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1344 Number of AfriNIC addresses announced to Internet: 103696896 Equivalent to 6 /8s, 46 /16s and 74 /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 13343 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6130 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4488 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3985 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3307 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2934 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2467 271 1911 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14392 41100 5367 AMAZON-02, US 11492 4771 316 803 CABLEONE, US 22773 4651 3110 387 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3686 1320 82 SHAW, CA 396982 3280 4826 471 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 4155 3135 243 1752 USDA-1, US 16625 2855 1215 2139 AKAMAI-AS, US 36352 2854 231 908 AS-COLOCROSSING, 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 7321 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4012 377 2284 M247, RO 20940 3901 3395 122 AKAMAI-ASN1, NL 12389 3095 2307 828 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2510 177 1819 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1721 206 1005 HOSTROYALE, IN 8452 1670 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 12473 3301 570 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2510 511 350 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1374 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1281 371 23 Telefonica del Peru S.A.A., PE 11664 1255 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1056 67 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1022 2486 56 TIM SA, BR 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 1963 630 32 RAYA-AS, EG 36992 1678 1509 399 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1119 523 47 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 558 82 3 KENET-AS, KE 15399 552 57 56 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 14392 41100 5367 AMAZON-02, US 9808 13343 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12473 3301 570 UNINET, MX 12479 7321 1711 149 UNI2-AS, ES 7545 6130 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4771 316 803 CABLEONE, US 22773 4651 3110 387 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4488 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4403 347 24 FPT-AS-AP FPT Telecom Company, VN 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 13343 13226 CHINAMOBILE-CN China Mobile Communications Grou 8151 12473 11903 UNINET, MX 12479 7321 7172 UNI2-AS, ES 7545 6130 5540 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4403 4379 FPT-AS-AP FPT Telecom Company, VN 22773 4651 4264 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4488 4177 BBIL-AP BHARTI Airtel Ltd., IN 11492 4771 3968 CABLEONE, US 7552 3985 3957 VIETEL-AS-AP Viettel Group, VN 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 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /12:300 /13:579 /14:1196 /15:2123 /16:13769 /17:8151 /18:13436 /19:24585 /20:44261 /21:51900 /22:112577 /23:104263 /24:633520 /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 6672 12473 UNINET, MX 12479 6280 7321 UNI2-AS, ES 11492 3585 4771 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3686 SHAW, CA 22773 2994 4651 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2819 3860 VIASAT-SP-BACKBONE, US 16509 2424 14392 AMAZON-02, US 30036 2300 2642 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2437 2:1526 3:963 4:10 5:4878 6:171 7:6 8:1507 9:6 11:172 12:1238 13:549 14:2658 15:402 16:303 17:388 18:906 20:580 21:4 22:188 23:8030 24:2554 25:2 27:2794 29:19 31:3354 32:31 33:1 34:84 35:275 36:4512 37:4542 38:9508 39:1097 40:466 41:4305 42:1932 43:2818 44:395 45:19264 46:5171 47:370 49:2133 50:2048 51:595 52:1629 54:359 55:1108 56:11 57:285 58:2316 59:1312 60:1195 61:2962 62:3087 63:1759 64:5843 65:2129 66:5873 67:3230 68:1486 69:4121 70:1042 71:627 72:2987 74:2854 75:1507 76:602 77:2762 78:1899 79:1739 80:2233 81:2114 82:3437 83:1464 84:1972 85:3577 86:1101 87:2130 88:1326 89:4520 90:815 91:8393 92:2804 93:2983 94:4151 95:4486 96:1467 97:311 98:948 99:754 100:71 101:1250 102:4173 103:32757 104:5435 105:775 106:899 107:2790 108:1201 109:4168 110:2258 111:3840 112:2735 113:1882 114:2083 115:2245 116:2114 117:3057 118:3068 119:2027 120:2340 121:1492 122:2810 123:2244 124:1708 125:2918 126:124 128:1569 129:959 130:1420 131:2196 132:787 133:461 134:1620 135:365 136:1485 137:1132 138:2821 139:1580 140:1638 141:1562 142:2232 143:2098 144:1307 145:627 146:2183 147:2123 148:2758 149:2891 150:1298 151:2635 152:2217 153:582 154:8150 155:2205 156:3195 157:2008 158:1429 159:2599 160:3640 161:2003 162:3967 163:2305 164:1955 165:2563 166:1514 167:2104 168:3776 169:772 170:5407 171:1058 172:4472 173:3425 174:902 175:1350 176:3755 177:4743 178:4313 179:2286 180:2883 181:4294 182:3764 183:2564 184:2054 185:21645 186:5395 187:4704 188:4390 189:4430 190:9716 191:1564 192:11391 193:9484 194:7827 195:5586 196:3246 197:3334 198:6092 199:8846 200:8065 201:6384 202:10440 203:10601 204:4602 205:3640 206:4353 207:3710 208:4238 209:5364 210:4704 211:2687 212:4881 213:3915 214:1038 215:53 216:7139 217:3384 218:1576 219:400 220:2196 221:1258 222:754 223:3121 End of report