IPv4 R&E Routing Table Report 23:05 GMT Fri 15 Aug, 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: 993009 Prefixes after maximum aggregation (per Origin AS): 385292 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489502 Number of IPv4 prefixes with a valid ROA: 562075 Number of IPv4 prefixes with an invalid ROA: 813 Number of IPv4 prefixes with no ROA: 430121 Total ASes present in the Internet Routing Table: 77107 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66059 Origin ASes announcing only one prefix: 26999 Transit ASes present in the Internet Routing Table: 11048 Transit-only ASes present in the Internet Routing Table: 546 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: 97 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1146 Number of instances of unregistered ASNs: 1178 Number of 32-bit ASNs allocated by the RIRs: 47163 Number of 32-bit ASNs visible in the Routing Table: 38770 Prefixes from 32-bit ASNs in the Routing Table: 207920 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 420 Number of addresses announced to Internet: 3107277312 Equivalent to 185 /8s, 53 /16s and 74 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 323289 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265484 Total APNIC prefixes after maximum aggregation: 78446 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256324 Unique aggregates announced from the APNIC address blocks: 105249 APNIC Region origin ASes present in the Internet Routing Table: 14737 APNIC Prefixes per ASN: 17.39 APNIC Region origin ASes announcing only one prefix: 4495 APNIC Region transit ASes present in the Internet Routing Table: 1996 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10292 Number of APNIC addresses announced to Internet: 749493504 Equivalent to 44 /8s, 172 /16s and 93 /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: 290408 Total ARIN prefixes after maximum aggregation: 132419 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292010 Unique aggregates announced from the ARIN address blocks: 141809 ARIN Region origin ASes present in the Internet Routing Table: 19225 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7050 ARIN Region transit ASes present in the Internet Routing Table: 1923 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5282 Number of ARIN addresses announced to Internet: 1348982272 Equivalent to 80 /8s, 103 /16s and 214 /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: 277057 Total RIPE prefixes after maximum aggregation: 136934 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276227 Unique aggregates announced from the RIPE address blocks: 178817 RIPE Region origin ASes present in the Internet Routing Table: 29007 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12082 RIPE Region transit ASes present in the Internet Routing Table: 4019 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: 12635 Number of RIPE addresses announced to Internet: 732229632 Equivalent to 43 /8s, 164 /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: 124183 Total LACNIC prefixes after maximum aggregation: 29947 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 120440 Unique aggregates announced from the LACNIC address blocks: 49108 LACNIC Region origin ASes present in the Internet Routing Table: 11278 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2537 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9245 Number of LACNIC addresses announced to Internet: 171179776 Equivalent to 10 /8s, 51 /16s and 255 /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: 34731 Total AfriNIC prefixes after maximum aggregation: 6804 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47588 Unique aggregates announced from the AfriNIC address blocks: 14150 AfriNIC Region origin ASes present in the Internet Routing Table: 1953 AfriNIC Prefixes per ASN: 24.37 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1316 Number of AfriNIC addresses announced to Internet: 105152256 Equivalent to 6 /8s, 68 /16s and 127 /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 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4602 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4465 535 310 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3716 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2971 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2176 427 181 TATACOMM-AS TATA Communications formerly 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 13808 41097 5328 AMAZON-02, US 11492 4733 314 786 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3645 1320 82 SHAW, CA 22773 3343 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 174 3283 8769 858 COGENT-174, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3215 3858 436 GOOGLE-CLOUD-PLATFORM, US 4155 2938 229 1737 USDA-1, US 16625 2903 1223 2164 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 7553 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3906 3395 123 AKAMAI-ASN1, NL 9009 3858 365 2175 M247, RO 12389 3112 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 584 TELLCOM-AS, TR 212238 2331 165 1695 CDNEXT, GB 203020 1636 208 767 HOSTROYALE, IN 13188 1605 100 37 TRIOLAN, UA 8452 1581 1852 14 TE-AS TE-AS, EG 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 12332 3272 580 UNINET, MX 10620 3481 472 1050 Telmex Colombia S.A., CO 13999 2527 511 349 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1371 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1184 371 22 Telefonica del Peru S.A.A., PE 11664 1086 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1055 67 375 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 2487 55 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 1770 660 28 RAYA-AS, EG 29571 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1421 1501 377 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1245 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 990 522 45 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 575 82 3 KENET-AS, KE 15399 539 56 53 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 13808 41097 5328 AMAZON-02, US 9808 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12332 3272 580 UNINET, MX 12479 7553 1711 149 UNI2-AS, ES 7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4733 314 786 CABLEONE, US 18403 4602 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4465 535 310 BBIL-AP BHARTI Airtel Ltd., IN 7552 3939 1332 27 VIETEL-AS-AP Viettel Group, 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 12877 12762 CHINAMOBILE-CN China Mobile Communications Grou 8151 12332 11752 UNINET, MX 12479 7553 7404 UNI2-AS, ES 7545 6138 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4602 4575 FPT-AS-AP FPT Telecom Company, VN 9498 4465 4155 BBIL-AP BHARTI Airtel Ltd., IN 11492 4733 3947 CABLEONE, US 7552 3939 3912 VIETEL-AS-AP Viettel Group, VN 20940 3906 3783 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 32182 UNALLOCATED 8.9.96.0/23 174 COGENT-174, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 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 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:577 /14:1199 /15:2128 /16:13759 /17:8154 /18:13425 /19:24435 /20:43864 /21:51618 /22:111928 /23:102787 /24:618674 /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 6552 12332 UNINET, MX 12479 6513 7553 UNI2-AS, ES 11492 3552 4733 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3442 3645 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2495 3343 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2366 13808 AMAZON-02, US 30036 2297 2640 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2201 3481 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) ---------------------------------------------- 1:2422 2:1494 3:886 4:10 5:4770 6:158 7:6 8:1543 9:3 11:172 12:1253 13:456 14:2585 15:377 16:285 17:379 18:901 20:564 21:4 22:188 23:7750 24:2652 25:2 27:2799 29:19 31:3362 32:29 33:1 34:83 35:261 36:4287 37:4564 38:9292 39:982 40:263 41:4275 42:2068 43:2741 44:380 45:18702 46:5106 47:338 49:1930 50:2044 51:592 52:1548 54:321 55:1105 56:11 57:276 58:2267 59:1290 60:1175 61:2919 62:3012 63:1776 64:5582 65:2142 66:4766 67:3092 68:1070 69:3883 70:1038 71:626 72:2843 74:2800 75:1504 76:602 77:2774 78:1891 79:1736 80:2211 81:2060 82:3243 83:1434 84:1916 85:3449 86:1121 87:2139 88:1317 89:4457 90:775 91:8405 92:2762 93:2962 94:4131 95:4438 96:1444 97:310 98:958 99:708 100:71 101:1467 102:3890 103:32904 104:5267 105:767 106:874 107:2641 108:1264 109:4184 110:2250 111:3581 112:2452 113:1861 114:1978 115:2188 116:2088 117:2694 118:3042 119:1918 120:2203 121:1327 122:2805 123:2224 124:1704 125:2925 126:91 128:1583 129:965 130:1283 131:2058 132:775 133:450 134:1612 135:356 136:1470 137:1126 138:2823 139:1600 140:1614 141:1534 142:1912 143:1975 144:1176 145:575 146:2173 147:2101 148:2706 149:2982 150:1278 151:2370 152:2103 153:527 154:7527 155:1879 156:3069 157:1956 158:1379 159:2519 160:3602 161:1906 162:3886 163:2266 164:1875 165:2466 166:1537 167:2051 168:3878 169:778 170:5213 171:1003 172:4230 173:3386 174:903 175:1325 176:3744 177:4705 178:3988 179:2320 180:2732 181:4174 182:3591 183:2384 184:2056 185:21598 186:5228 187:4646 188:4282 189:4329 190:9519 191:1525 192:11302 193:9476 194:7792 195:5619 196:3265 197:3217 198:6081 199:8638 200:8079 201:6380 202:10405 203:10662 204:4574 205:3607 206:4505 207:3511 208:4275 209:5118 210:4665 211:2641 212:4601 213:3827 214:1038 215:51 216:6789 217:3301 218:1430 219:399 220:2142 221:1208 222:742 223:2825 End of report